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Daily · #38

ICD-10 code of the day

One real diagnosis code a day, straight from the official ICD-10-CM code set, with a deadpan note from a coder who has seen too much. The codes and descriptions are real. The notes are satire.

Heat & weather

X15.1XXA

Contact with hot toaster, initial encounter

Coder’s note

There is a code for the toaster. There is no code for the bread.

See it in the list

Every code

Code Official description Coder’s note
K35.80From the show Unspecified acute appendicitis McBurney’s point is the sign. This is the code. The paperwork is another matter.
K40.20From the show Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent Two sides, one negotiating table.
K40.90From the show Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent The subject of a fictional peace conference on this show. The treaty is still not ratified.
K40.91From the show Unilateral inguinal hernia, without obstruction or gangrene, recurrent Returns, like a denied claim.
K80.20From the show Calculus of gallbladder without cholecystitis without obstruction The show covers gallbladder surgery as a football game, which the classification does not.
R41.82Symptoms & states Altered mental status, unspecified Also the state of anyone who has reached the payer’s phone tree.
R45.3Symptoms & states Demoralization and apathy A symptom, and a staff survey result.
R46.4Symptoms & states Slowness and poor responsiveness A symptom in patients. A service level in payers.
R53.81Symptoms & states Other malaise From the French for ‘discomfort’, also a fair description of the claims portal.
R53.83Symptoms & states Other fatigue A symptom shared by patients, clinicians and the person reading the coding manual.
R68.89Symptoms & states Other general symptoms and signs When the patient says ‘I just don’t feel right’ and the classification says ‘same’.
R69Symptoms & states Illness, unspecified The diagnosis of last resort and first triage.
T14.90XASymptoms & states Injury, unspecified, initial encounter The chart says ‘ouch’. The classification agrees.
V00.111AWheels & water Fall from in-line roller-skates, initial encounter In-line and non-in-line skates have separate codes. The wheels were not consulted.
V00.131AWheels & water Fall from skateboard, initial encounter Separate codes exist for colliding with a stationary object. The stationary object is unavailable for comment.
V00.141AWheels & water Fall from scooter (nonmotorized), initial encounter The motorized kind has its own code, and its own opinions.
V00.151AWheels & water Fall from heelies, initial encounter Somewhere, a committee added a code for heelies. The minutes are not public.
V00.211AWheels & water Fall from ice-skates, initial encounter A triple axel is not a diagnosis, but the fall from one might be.
V00.221AWheels & water Fall from sled, initial encounter ‘Rosebud’ has no diagnostic code.
V91.07XAWheels & water Burn due to water-skis on fire, initial encounter Somebody, at some point, needed this code.
V94.4XXAWheels & water Injury to barefoot water-skier, initial encounter The classification distinguishes barefoot from shod. Nobody asked the water.
W01.0XXAObjects & mishaps Fall on same level from slipping, tripping and stumbling without subsequent striking against object, initial encounter Three verbs, one code. Payers approve of bundling.
W07.XXXAObjects & mishaps Fall from chair, initial encounter Not to be confused with a fall from department chair, which is called a reorganization.
W10.0XXAObjects & mishaps Fall (on)(from) escalator, initial encounter A broken escalator is just stairs. This code is about the working kind.
W10.1XXAObjects & mishaps Fall (on)(from) sidewalk curb, initial encounter Not to be confused with a curbside consult, which is free and equally risky.
W11.XXXAObjects & mishaps Fall on and from ladder, initial encounter The career ladder is covered elsewhere (Z56).
W14.XXXAObjects & mishaps Fall from tree, initial encounter Unrelated to decision trees, though both involve branches and a hard landing.
W17.82XAObjects & mishaps Fall from (out of) grocery cart, initial encounter Yes, there is a code for falling out of a grocery cart. No, there is no code for the appeal.
W18.40XAObjects & mishaps Slipping, tripping and stumbling without falling, unspecified, initial encounter A code for an injury that did not happen. See also: a prior authorization that almost was.
W19.XXXAObjects & mishaps Unspecified fall, initial encounter The chart says ‘pt fell.’ The patient agrees.
W21.02XAObjects & mishaps Struck by soccer ball, initial encounter The beautiful game now has a code, and a deductible.
W21.04XAObjects & mishaps Struck by golf ball, initial encounter ‘Fore’ is not a billable modifier.
W21.13XAObjects & mishaps Struck by golf club, initial encounter The only code where the doctor is out of the office and the patient knows why.
W22.01XAObjects & mishaps Walked into wall, initial encounter The wall reported no injuries and filed no claim.
W22.02XAObjects & mishaps Walked into lamppost, initial encounter The lamppost was not at fault and is not in network.
W22.02XDObjects & mishaps Walked into lamppost, subsequent encounter Subsequent encounter. The lamppost has not moved.
W22.03XAObjects & mishaps Walked into furniture, initial encounter Please specify the furniture. The classification declines to.
W22.8XXAObjects & mishaps Striking against or struck by other objects, initial encounter The classification’s way of admitting it has run out of nouns.
W26.2XXAObjects & mishaps Contact with edge of stiff paper, initial encounter The only paperwork injury with its own code.
W27.2XXAObjects & mishaps Contact with scissors, initial encounter Running with them is a separate lecture, not a separate code.
W27.3XXAObjects & mishaps Contact with needle (sewing), initial encounter Not the kind of needle that comes with a prior authorization.
W27.5XXAObjects & mishaps Contact with paper-cutter, initial encounter See also W26.2XXA, the smaller paperwork incident.
W37.0XXAObjects & mishaps Explosion of bicycle tire, initial encounter The tire’s claim was denied as a pre-existing condition.
W42.9XXAObjects & mishaps Exposure to other noise, initial encounter Suspected source: the payer’s hold music.
W49.04XAObjects & mishaps Ring or other jewelry causing external constriction, initial encounter Solved with a small saw, an apology and a form.
W53.01XABirds & beasts Bitten by mouse, initial encounter The smallest rodent with its own code, and a claim larger than the mouse.
W53.11XABirds & beasts Bitten by rat, initial encounter Mice and rats are coded separately. The rodents were not consulted.
W53.21XABirds & beasts Bitten by squirrel, initial encounter The rabies question triggers four forms. The squirrel signs none.
W54.0XXABirds & beasts Bitten by dog, initial encounter A staple of the emergency department, and still no code for: it was a good dog.
W55.01XABirds & beasts Bitten by cat, initial encounter Bites and scratches are coded separately. The cat considers this an overreach.
W55.03XABirds & beasts Scratched by cat, initial encounter The cat has declined to be attached to the chart.
W55.12XABirds & beasts Struck by horse, initial encounter Please indicate the number of horsepower. It is, as a rule, one.
W55.22XABirds & beasts Struck by cow, initial encounter Cows cannot be sued. Their insurers, however, are well represented.
W55.31XABirds & beasts Bitten by other hoof stock, initial encounter Please identify the species. Species identification is not a covered service.
W55.41XABirds & beasts Bitten by pig, initial encounter Pigs have their own code. The pig did not ask for it.
W55.51XABirds & beasts Bitten by raccoon, initial encounter The raccoon has taken the chart and left.
W56.01XABirds & beasts Bitten by dolphin, initial encounter Yes, dolphins have a code. No, the dolphin does not have a payer.
W56.21XABirds & beasts Bitten by orca, initial encounter Orcas are dolphins, but the classification lists them separately. Coders have opinions.
W57.XXXABirds & beasts Bitten or stung by nonvenomous insect and other nonvenomous arthropods, initial encounter Every nonvenomous insect and arthropod in the world, in one code. The classification believes in economies of scale.
W59.01XABirds & beasts Bitten by nonvenomous lizards, initial encounter ‘Nonvenomous’ is a determination usually made after the copay.
W59.21XABirds & beasts Bitten by turtle, initial encounter Slow, but still faster than a prior authorization.
W60.XXXABirds & beasts Contact with nonvenomous plant thorns and spines and sharp leaves, initial encounter Roses, cacti and holly share a code. The florist has no comment.
W61.01XABirds & beasts Bitten by parrot, initial encounter The parrot repeats what the coder said about the payer. Not billable.
W61.22XABirds & beasts Struck by other psittacines, initial encounter The cockatoo, the budgie and every other parrot-adjacent bird share one code. Macaws got their own.
W61.32XABirds & beasts Struck by chicken, initial encounter The chicken’s side of the story is not a required field.
W61.33XABirds & beasts Pecked by chicken, initial encounter Not to be confused with struck by chicken. The classification is firm on this.
W61.42XABirds & beasts Struck by turkey, initial encounter Seasonal, like open enrollment, and about as welcome.
W61.51XABirds & beasts Bitten by goose, initial encounter Geese have their own code because someone, somewhere, watched a goose and took notes.
W61.52XABirds & beasts Struck by goose, initial encounter Wait time for the appointment: see Z75.2.
W61.61XABirds & beasts Bitten by duck, initial encounter A coder must now decide between a bite and a strike. Nobody has asked the duck.
W61.62XABirds & beasts Struck by duck, initial encounter Please confirm the duck was in network.
W61.62XDBirds & beasts Struck by duck, subsequent encounter Follow-up visit. The duck has not returned our calls.
W61.62XSBirds & beasts Struck by duck, sequela Sequela: the late effects. The duck remains at large. The deductible has reset.
W61.99XABirds & beasts Other contact with other birds, initial encounter The classification’s way of saying: a bird did something.
W62.0XXABirds & beasts Contact with nonvenomous frogs, initial encounter Kissing is billed separately.
W62.1XXABirds & beasts Contact with nonvenomous toads, initial encounter Frogs and toads are coded separately, and the committee’s minutes are sealed.
W88.0XXAObjects & mishaps Exposure to X-rays, initial encounter Yes, there is a code for the X-ray. No, there is no code for the bill.
W94.11XAObjects & mishaps Exposure to residence or prolonged visit at high altitude, initial encounter The only code that places the patient above the paperwork.
W94.23XAObjects & mishaps Exposure to sudden change in air pressure in aircraft during ascent, initial encounter Airplane ears have a code. Airline delays do not.
X10.0XXAHeat & weather Contact with hot drinks, initial encounter Coffee’s contribution to healthcare: a code for spilling it, none for going without.
X15.0XXAHeat & weather Contact with hot stove (kitchen), initial encounter No prior authorization is required to learn that the stove is hot.
X15.1XXAHeat & weather Contact with hot toaster, initial encounter There is a code for the toaster. There is no code for the bread.
X15.3XXAHeat & weather Contact with hot saucepan or skillet, initial encounter Cast iron has a code, and a personality.
X16.XXXAHeat & weather Contact with hot heating appliances, radiators and pipes, initial encounter The building’s heating has always been either this or nothing.
X19.XXXAHeat & weather Contact with other heat and hot substances, initial encounter See also: the hospital parking lot in August.
X31.XXXAHeat & weather Exposure to excessive natural cold, initial encounter Not to be confused with the operating room, where the cold is intentional.
X32.XXXAHeat & weather Exposure to sunlight, initial encounter Yes, sunlight is an external cause. No, your plan does not cover the sun.
X58.XXXAObjects & mishaps Exposure to other specified factors, initial encounter The factors are specified nowhere.
Y92.230Places Patient room in hospital as the place of occurrence of the external cause The place of occurrence: here. The place of billing: elsewhere.
Y92.232Places Corridor of hospital as the place of occurrence of the external cause Also the department, on most evenings.
Y92.233Places Cafeteria of hospital as the place of occurrence of the external cause The sandwich is not an external cause. Yet.
Y92.234Places Operating room of hospital as the place of occurrence of the external cause Where the time-out happens, and where the schedule argues with it.
Y92.238Places Other place in hospital as the place of occurrence of the external cause The code for wherever the map doesn’t show.
Y92.239Places Unspecified place in hospital as the place of occurrence of the external cause Where you are when the sign says ‘you are here’ and you are not.
Y92.240Places Courthouse as the place of occurrence of the external cause Where the appeal ends up, eventually.
Y92.241Places Library as the place of occurrence of the external cause Silence requested, unlike the hold music (W42.9XXA).
Y92.242Places Post office as the place of occurrence of the external cause Where ‘the check is in the mail’ becomes a place.
Y92.250Places Art Gallery as the place of occurrence of the external cause Injuries caused by the art are classified as critical reviews.
Y92.251Places Museum as the place of occurrence of the external cause Do not touch, said the sign. The classification agreed.
Y92.252Places Music hall as the place of occurrence of the external cause Coded as a place of occurrence. The occurrence was probably the encore.
Y92.253Places Opera house as the place of occurrence of the external cause A place of occurrence with better documentation than most encounters: three acts and a libretto.
Y92.254Places Theater (live) as the place of occurrence of the external cause Coded here when ‘break a leg’ is taken literally.
Y92.26Places Movie house or cinema as the place of occurrence of the external cause Coming soon: your prior authorization.
Y92.311Places Squash court as the place of occurrence of the external cause A vegetable in the kitchen and a sport here. Coders keep them apart.
Y92.312Places Tennis court as the place of occurrence of the external cause Love, fifteen, thirty, deductible.
Y92.481Places Parking lot as the place of occurrence of the external cause Where the visit begins and the patience ends.
Y92.510Places Bank as the place of occurrence of the external cause Where the deductible is kept and the co-pay is withdrawn.
Y92.512Places Supermarket, store or market as the place of occurrence of the external cause Where the pharmacy hides.
Y92.520Places Airport as the place of occurrence of the external cause Boarding time: unspecified. Prior authorization time: also unspecified.
Y92.530Places Ambulatory surgery center as the place of occurrence of the external cause Where surgery is done without an overnight stay, and the paperwork stays over.
Y92.531Places Health care provider office as the place of occurrence of the external cause The place where the co-pay lives.
Y92.538Places Other ambulatory health services establishments as the place of occurrence of the external cause Urgent care, presumably, and somewhere, a very long line.
Y92.71Places Barn as the place of occurrence of the external cause A place of occurrence with better ventilation than the average waiting room.
Y92.72Places Chicken coop as the place of occurrence of the external cause The coop has its own code. The rooster’s testimony has not been entered.
Y92.73Places Farm field as the place of occurrence of the external cause Coded as a place. The crop is a separate matter, and a subsidy.
Y92.831Places Amusement park as the place of occurrence of the external cause The only place that posts its wait time in advance.
Y92.833Places Campsite as the place of occurrence of the external cause The only place in the classification where ‘no signal’ is a feature.
Y92.834Places Zoological garden (Zoo) as the place of occurrence of the external cause Where every animal is properly labeled. Unlike the formulary.
Y92.9Places Unspecified place or not applicable The code for ‘not applicable’. Applicable, in practice, to most forms.
Y93.01Activities Activity, walking, marching and hiking The cheapest treatment in the classification, and the least reimbursed.
Y93.02Activities Activity, running Available in 26.2-mile denominations, none of them covered.
Y93.11Activities Activity, swimming The one exercise that keeps you from writing notes at the same time.
Y93.15Activities Activity, underwater diving and snorkeling The only place where nobody can page you.
Y93.17Activities Activity, water skiing and wake boarding See also V91.07XA, in which the water-skis are on fire.
Y93.34Activities Activity, bungee jumping What goes down comes back up, unlike a reimbursement.
Y93.41Activities Activity, dancing Two-step is a dance. Two-step authentication is a different code entirely.
Y93.42Activities Activity, yoga Flexible in ways the formulary is not.
Y93.53Activities Activity, golf Where a great deal of health policy is not decided, but discussed, at length, on the fourth hole.
Y93.54Activities Activity, bowling Strikes, spares and the occasional gutter claim.
Y93.6AActivities Activity, physical games generally associated with school recess, summer camp and children Tag, you’re it, and so is your deductible.
Y93.71Activities Activity, boxing See also: contract negotiations with the payer.
Y93.72Activities Activity, wrestling A sport in which each side attempts to pin the other. Compare: the appeals process.
Y93.74Activities Activity, frisbee The ultimate outcome is not a diagnosis.
Y93.75Activities Activity, martial arts A discipline of controlled conflict. Compare: peer-to-peer review.
Y93.81Activities Activity, refereeing a sports activity The role in which everyone else is wrong. Compare: the utilization reviewer.
Y93.82Activities Activity, spectator at an event Watching is an activity. The classification agrees it is tiring.
Y93.83Activities Activity, rough housing and horseplay Horseplay is classified. Horses are not required.
Y93.84Activities Activity, sleeping Sleeping is an activity. Every clinician is encouraged to try it. None can bill for it.
Y93.89Activities Activity, other specified Both ‘other’ and ‘specified’. A contradiction, but a billable one.
Y93.9Activities Activity, unspecified The most honest code in the classification.
Y93.A1Activities Activity, exercise machines primarily for cardiorespiratory conditioning The treadmill: a machine that goes nowhere while the billing continues.
Y93.A3Activities Activity, aerobic and step exercise Step exercise is a workout. Step therapy is a payer requirement. Both are tiring.
Y93.A5Activities Activity, obstacle course Also known as a health plan’s formulary, but shorter.
Y93.B3Activities Activity, free weights The only free thing in the classification.
Y93.C1Activities Activity, computer keyboarding The activity that now occupies most of a clinical day. Not billable, but present.
Y93.C2Activities Activity, hand held interactive electronic device The phone. The hold music has its own code (W42.9XXA).
Y93.C9Activities Activity, other involving computer technology and electronic devices The patient portal is in here somewhere.
Y93.D1Activities Activity, knitting and crocheting A purl-ous pastime, and a code.
Y93.D2Activities Activity, sewing Like suturing, but the thread is not itemized.
Y93.D3Activities Activity, furniture building and finishing The classification says nothing about the missing screw.
Y93.E4Activities Activity, ironing Ironing is an activity. Wrinkled scrubs are a lifestyle.
Y93.E5Activities Activity, floor mopping and cleaning See also: wet floor sign, absent.
Y93.E6Activities Activity, residential relocation Also the process of moving a record from one EHR to another. Some things do not survive the move.
Y93.F1Activities Activity, caregiving, bathing An activity done at home every day, reimbursed at a rate of zero.
Y93.F2Activities Activity, caregiving, lifting The person is lifted. The system, so far, is not.
Y93.G1Activities Activity, food preparation and clean up Clean-up, as usual, is part of the activity.
Y93.G2Activities Activity, grilling and smoking food The only code where smoking is encouraged.
Y93.G3Activities Activity, cooking and baking Every recipe has a step that says ‘to taste’. Every form has one that says ‘other’.
Y93.H1Activities Activity, digging, shoveling and raking A leading cause of Saturdays.
Y93.H2Activities Activity, gardening and landscaping The tomatoes are not reimbursed either.
Y93.H3Activities Activity, building and construction The permit was approved faster than the prior authorization.
Y93.I1Activities Activity, roller coaster riding Ups, downs and sudden stops. Also known as the claims process.
Y93.J1Activities Activity, piano playing Eighty-eight keys, one code. Efficiency the payer should try.
Y93.J2Activities Activity, drum and other percussion instrument playing Percussion is also a physical exam technique. Only one of them is reimbursed.
Y93.J3Activities Activity, string instrument playing Strings attached: also known as the fine print.
Y93.K1Activities Activity, walking an animal The animal remains uncoded, and unfazed.
Y93.K2Activities Activity, milking an animal Milking an animal is an activity. Milking a claim is an art.
Y93.K3Activities Activity, grooming and shearing an animal Not to be confused with the payer’s ‘haircut’ on your reimbursement.
Y93.L9Activities Activity, other outdoor activity In the classification, everything outside is ‘other’.
Y99.0Activities Civilian activity done for income or pay Compare: documentation, which is done for neither.
Y99.2Activities Volunteer activity The category for the work nobody is paid to do, including the forms.
Y99.8Activities Other external cause status Reserved for activities done for neither pay nor prestige. Podcasts, we suspect.
Y99.9Activities Unspecified external cause status Everyone’s, most days.
Z00.00Paperwork Encounter for general adult medical examination without abnormal findings Nothing wrong found. Good news, clinically. Neutral news, financially.
Z00.01Paperwork Encounter for general adult medical examination with abnormal findings Found something at your free checkup? The checkup stays free. Following up on the finding may not.
Z02.1Paperwork Encounter for pre-employment examination To establish that you were healthy before the job did what jobs do.
Z02.6Paperwork Encounter for examination for insurance purposes The insurer examines you so it can know you better than you do.
Z02.79Paperwork Encounter for issue of other medical certificate A letter stating what everyone already knew, with a signature.
Z02.89Paperwork Encounter for other administrative examinations Diagnosis: form. Prognosis: further forms.
Z03.89Paperwork Encounter for observation for other suspected diseases and conditions ruled out Ruled out: the best possible diagnosis, and the one that reimburses least.
Z09Paperwork Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ‘Completed treatment’ is an aspiration, and now a diagnosis.
Z53.21Paperwork Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider Coded as the patient’s decision. The wait behind it rarely gets a code (see Z75.2).
Z53.31Paperwork Laparoscopic surgical procedure converted to open procedure The prior authorization was for the other one.
Z53.9Paperwork Procedure and treatment not carried out, unspecified reason The operating schedule, in one line.
Z55.6Paperwork Problems related to health literacy There is a code for the patient’s literacy. There is none for the discharge instructions.
Z56.3Paperwork Stressful work schedule A code the profession has been applying to itself for decades.
Z56.4Paperwork Discord with boss and workmates Peer-to-peer review, but internal.
Z56.5Paperwork Uncongenial work environment A phrase that could describe the EHR.
Z56.6Paperwork Other physical and mental strain related to work A category most clinicians will find covers the whole shift.
Z62.891Paperwork Sibling rivalry Yes, it is coded. No, it is not preventable, and the sequelae appear at holiday dinners.
Z71.0Paperwork Person encountering health services to consult on behalf of another person A caregiver: the actual medical system.
Z71.1Paperwork Person with feared health complaint in whom no diagnosis is made Nothing found. Something billed.
Z71.2Paperwork Person consulting for explanation of examination or test findings The portal released the results before the doctor could. This is the follow-up.
Z71.87Paperwork Encounter for pediatric-to-adult transition counseling For the child who ages out of one set of forms and into another.
Z71.89Paperwork Other specified counseling Specified in the chart, not here.
Z72.4Paperwork Inappropriate diet and eating habits See also: the hospital cafeteria (Y92.233).
Z72.6Paperwork Gambling and betting Also known as open enrollment.
Z72.820Paperwork Sleep deprivation Also known as residency.
Z73.0Paperwork Burn-out Burn-out has a diagnosis code. The staffing plan does not.
Z73.2Paperwork Lack of relaxation and leisure Recorded in the chart at 11 p.m. by the clinician, who is on call.
Z73.3Paperwork Stress, not elsewhere classified ‘Elsewhere’ being the rest of the classification, apparently.
Z73.9Paperwork Problem related to life management difficulty, unspecified The human condition, coded as such.
Z75.0Paperwork Medical services not available in home House calls: not available in the home, only on the phone.
Z75.1Paperwork Person awaiting admission to adequate facility elsewhere Elsewhere is where all the beds are.
Z75.2Paperwork Other waiting period for investigation and treatment The official code for waiting. Prior authorization is a subset.
Z75.3Paperwork Unavailability and inaccessibility of health-care facilities The only diagnosis whose cure is a budget.
Z75.4Paperwork Unavailability and inaccessibility of other helping agencies Also known as ‘your call is important to us’.
Z75.8Paperwork Other problems related to medical facilities and other health care The code for whatever the system did that no other code could describe.
Z75.9Paperwork Unspecified problem related to medical facilities and other health care The patient’s review of the visit, in code.
Z76.0Paperwork Encounter for issue of repeat prescription A visit whose entire purpose is to re-request permission you already had.
Z76.3Paperwork Healthy person accompanying sick person The only code for someone who is not sick and still has to wait.
Z76.4Paperwork Other boarder to healthcare facility A person in a bed with nowhere else to go. Familiar to every emergency department.
Z76.89Paperwork Persons encountering health services in other specified circumstances Anyone, anywhere, for any reason. ‘Specified’ is generous.
Z79.899Paperwork Other long term (current) drug therapy Refill authorizations renew on a schedule, like a subscription nobody wanted.
Z99.89Paperwork Dependence on other enabling machines and devices The fax machine, disproportionately.

Codes and descriptions: ICD-10-CM, FY2026 and FY2027, published by the CDC National Center for Health Statistics. The notes are satire, not coding advice. Do not bill from this page.

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