ICD-10 · PDGM grouping
T66-T78 — Other and unspecified effects of external causes
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
456
No clinical group
56
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
337 of the 456 codes in T66-T78 group to MMTA - Other, but the range is not uniform — it spreads across 2 clinical groups. A further 56 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in T66-T78
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| T66XXXA | Radiation sickness, unspecified, initial encounter | A | Accepted |
| T66XXXD | Radiation sickness, unspecified, subsequent encounter | A | Accepted |
| T66XXXS | Radiation sickness, unspecified, sequela | A | Accepted |
| T6701XA | Heatstroke and sunstroke, initial encounter | A | Accepted |
| T6701XD | Heatstroke and sunstroke, subsequent encounter | A | Accepted |
| T6701XS | Heatstroke and sunstroke, sequela | A | Accepted |
| T6702XA | Exertional heatstroke, initial encounter | A | Accepted |
| T6702XD | Exertional heatstroke, subsequent encounter | A | Accepted |
| T6702XS | Exertional heatstroke, sequela | A | Accepted |
| T6709XA | Other heatstroke and sunstroke, initial encounter | A | Accepted |
| T6709XD | Other heatstroke and sunstroke, subsequent encounter | A | Accepted |
| T6709XS | Other heatstroke and sunstroke, sequela | A | Accepted |
| T671XXA | Heat syncope, initial encounter | A | Accepted |
| T671XXD | Heat syncope, subsequent encounter | A | Accepted |
| T671XXS | Heat syncope, sequela | A | Accepted |
| T672XXA | Heat cramp, initial encounter | A | Accepted |
| T672XXD | Heat cramp, subsequent encounter | A | Accepted |
| T672XXS | Heat cramp, sequela | A | Accepted |
| T673XXA | Heat exhaustion, anhydrotic, initial encounter | A | Accepted |
| T673XXD | Heat exhaustion, anhydrotic, subsequent encounter | A | Accepted |
| T673XXS | Heat exhaustion, anhydrotic, sequela | A | Accepted |
| T674XXA | Heat exhaustion due to salt depletion, initial encounter | A | Accepted |
| T674XXD | Heat exhaustion due to salt depletion, subsequent encounter | A | Accepted |
| T674XXS | Heat exhaustion due to salt depletion, sequela | A | Accepted |
| T675XXA | Heat exhaustion, unspecified, initial encounter | A | Accepted |
| T675XXD | Heat exhaustion, unspecified, subsequent encounter | A | Accepted |
| T675XXS | Heat exhaustion, unspecified, sequela | A | Accepted |
| T676XXA | Heat fatigue, transient, initial encounter | A | Accepted |
| T676XXD | Heat fatigue, transient, subsequent encounter | A | Accepted |
| T676XXS | Heat fatigue, transient, sequela | A | Accepted |
| T677XXA | Heat edema, initial encounter | A | Accepted |
| T677XXD | Heat edema, subsequent encounter | A | Accepted |
| T677XXS | Heat edema, sequela | A | Accepted |
| T678XXA | Other effects of heat and light, initial encounter | A | Accepted |
| T678XXD | Other effects of heat and light, subsequent encounter | A | Accepted |
| T678XXS | Other effects of heat and light, sequela | A | Accepted |
| T679XXA | Effect of heat and light, unspecified, initial encounter | A | Accepted |
| T679XXD | Effect of heat and light, unspecified, subsequent encounter | A | Accepted |
| T679XXS | Effect of heat and light, unspecified, sequela | A | Accepted |
| T68XXXA | Hypothermia, initial encounter | A | Accepted |
| T68XXXD | Hypothermia, subsequent encounter | A | Accepted |
| T68XXXS | Hypothermia, sequela | A | Accepted |
| T69011A | Immersion hand, right hand, initial encounter | A | Accepted |
| T69011D | Immersion hand, right hand, subsequent encounter | A | Accepted |
| T69011S | Immersion hand, right hand, sequela | A | Accepted |
| T69012A | Immersion hand, left hand, initial encounter | A | Accepted |
| T69012D | Immersion hand, left hand, subsequent encounter | A | Accepted |
| T69012S | Immersion hand, left hand, sequela | A | Accepted |
| T69019A | Immersion hand, unspecified hand, initial encounter | None | Cannot group |
| T69019D | Immersion hand, unspecified hand, subsequent encounter | None | Cannot group |
| T69019S | Immersion hand, unspecified hand, sequela | None | Cannot group |
| T69021A | Immersion foot, right foot, initial encounter | A | Accepted |
| T69021D | Immersion foot, right foot, subsequent encounter | A | Accepted |
| T69021S | Immersion foot, right foot, sequela | A | Accepted |
| T69022A | Immersion foot, left foot, initial encounter | A | Accepted |
| T69022D | Immersion foot, left foot, subsequent encounter | A | Accepted |
| T69022S | Immersion foot, left foot, sequela | A | Accepted |
| T69029A | Immersion foot, unspecified foot, initial encounter | None | Too unspecified |
| T69029D | Immersion foot, unspecified foot, subsequent encounter | None | Cannot group |
| T69029S | Immersion foot, unspecified foot, sequela | None | Cannot group |
| T691XXA | Chilblains, initial encounter | A | Accepted |
| T691XXD | Chilblains, subsequent encounter | A | Accepted |
| T691XXS | Chilblains, sequela | A | Accepted |
| T698XXA | Other specified effects of reduced temperature, init encntr | A | Accepted |
| T698XXD | Other specified effects of reduced temperature, subs encntr | A | Accepted |
| T698XXS | Other specified effects of reduced temperature, sequela | A | Accepted |
| T699XXA | Effect of reduced temperature, unspecified, init encntr | A | Accepted |
| T699XXD | Effect of reduced temperature, unspecified, subs encntr | A | Accepted |
| T699XXS | Effect of reduced temperature, unspecified, sequela | A | Accepted |
| T700XXA | Otitic barotrauma, initial encounter | A | Accepted |
| T700XXD | Otitic barotrauma, subsequent encounter | A | Accepted |
| T700XXS | Otitic barotrauma, sequela | A | Accepted |
| T701XXA | Sinus barotrauma, initial encounter | A | Accepted |
| T701XXD | Sinus barotrauma, subsequent encounter | A | Accepted |
| T701XXS | Sinus barotrauma, sequela | A | Accepted |
| T7020XA | Unspecified effects of high altitude, initial encounter | A | Accepted |
| T7020XD | Unspecified effects of high altitude, subsequent encounter | A | Accepted |
| T7020XS | Unspecified effects of high altitude, sequela | A | Accepted |
| T7029XA | Other effects of high altitude, initial encounter | A | Accepted |
| T7029XD | Other effects of high altitude, subsequent encounter | A | Accepted |
| T7029XS | Other effects of high altitude, sequela | A | Accepted |
| T703XXA | Caisson disease [decompression sickness], initial encounter | A | Accepted |
| T703XXD | Caisson disease, subsequent encounter | A | Accepted |
| T703XXS | Caisson disease [decompression sickness], sequela | A | Accepted |
| T704XXA | Effects of high-pressure fluids, initial encounter | A | Accepted |
| T704XXD | Effects of high-pressure fluids, subsequent encounter | A | Accepted |
| T704XXS | Effects of high-pressure fluids, sequela | A | Accepted |
| T708XXA | Oth effects of air pressure and water pressure, init encntr | A | Accepted |
| T708XXD | Oth effects of air pressure and water pressure, subs encntr | A | Accepted |
| T708XXS | Other effects of air pressure and water pressure, sequela | A | Accepted |
| T709XXA | Effect of air pressure and water pressure, unsp, init encntr | A | Accepted |
| T709XXD | Effect of air pressure and water pressure, unsp, subs encntr | A | Accepted |
| T709XXS | Effect of air pressure and water pressure, unsp, sequela | A | Accepted |
| T71111A | Asphyx due to smothering under pillow, accidental, init | A | Accepted |
| T71111D | Asphyx due to smothering under pillow, accidental, subs | A | Accepted |
| T71111S | Asphyx due to smothering under pillow, accidental, sequela | A | Accepted |
| T71112A | Asphyxiation due to smothering under pillow, self-harm, init | A | Accepted |
| T71112D | Asphyxiation due to smothering under pillow, self-harm, subs | A | Accepted |
| T71112S | Asphyx due to smothering under pillow, self-harm, sequela | A | Accepted |
| T71113A | Asphyxiation due to smothering under pillow, assault, init | A | Accepted |
| T71113D | Asphyxiation due to smothering under pillow, assault, subs | A | Accepted |
| T71113S | Asphyx due to smothering under pillow, assault, sequela | A | Accepted |
| T71114A | Asphyx due to smothering under pillow, undetermined, init | A | Accepted |
| T71114D | Asphyx due to smothering under pillow, undetermined, subs | A | Accepted |
| T71114S | Asphyx due to smothering under pillow, undetermined, sequela | A | Accepted |
| T71121A | Asphyxiation due to plastic bag, accidental, init encntr | A | Accepted |
| T71121D | Asphyxiation due to plastic bag, accidental, subs encntr | A | Accepted |
| T71121S | Asphyxiation due to plastic bag, accidental, sequela | A | Accepted |
| T71122A | Asphyxiation due to plastic bag, intentional self-harm, init | A | Accepted |
| T71122D | Asphyxiation due to plastic bag, intentional self-harm, subs | A | Accepted |
| T71122S | Asphyxiation due to plastic bag, self-harm, sequela | A | Accepted |
| T71123A | Asphyxiation due to plastic bag, assault, initial encounter | A | Accepted |
| T71123D | Asphyxiation due to plastic bag, assault, subs encntr | A | Accepted |
| T71123S | Asphyxiation due to plastic bag, assault, sequela | A | Accepted |
| T71124A | Asphyxiation due to plastic bag, undetermined, init encntr | A | Accepted |
| T71124D | Asphyxiation due to plastic bag, undetermined, subs encntr | A | Accepted |
| T71124S | Asphyxiation due to plastic bag, undetermined, sequela | A | Accepted |
| T71131A | Asphyx due to being trapped in bed linens, accidental, init | A | Accepted |
| T71131D | Asphyx due to being trapped in bed linens, accidental, subs | A | Accepted |
| T71131S | Asphyx due to being trapped in bed linens, acc, sequela | A | Accepted |
| T71132A | Asphyx due to being trapped in bed linens, self-harm, init | A | Accepted |
| T71132D | Asphyx due to being trapped in bed linens, self-harm, subs | A | Accepted |
| T71132S | Asphyx due to being trapped in bed linens, slf-hrm, sequela | A | Accepted |
| T71133A | Asphyx due to being trapped in bed linens, assault, init | A | Accepted |
| T71133D | Asphyx due to being trapped in bed linens, assault, subs | A | Accepted |
| T71133S | Asphyx due to being trapped in bed linens, assault, sequela | A | Accepted |
| T71134A | Asphyx due to being trapped in bed linens, undet, init | A | Accepted |
| T71134D | Asphyx due to being trapped in bed linens, undet, subs | A | Accepted |
| T71134S | Asphyx due to being trapped in bed linens, undet, sequela | A | Accepted |
| T71141A | Asphyx due to smothr under another person's body, acc, init | A | Accepted |
| T71141D | Asphyx due to smothr under another person's body, acc, subs | A | Accepted |
| T71141S | Asphyx due to smothr under another person's body, acc, sqla | A | Accepted |
| T71143A | Asphyx d/t smothr under another person's body, asslt, init | A | Accepted |
| T71143D | Asphyx d/t smothr under another person's body, asslt, subs | A | Accepted |
| T71143S | Asphyx d/t smothr under another person's body, asslt, sqla | A | Accepted |
| T71144A | Asphyx d/t smothr under another person's body, undet, init | A | Accepted |
| T71144D | Asphyx d/t smothr under another person's body, undet, subs | A | Accepted |
| T71144S | Asphyx d/t smothr under another person's body, undet, sqla | A | Accepted |
| T71151A | Asphyx due to smothering in furniture, accidental, init | A | Accepted |
| T71151D | Asphyx due to smothering in furniture, accidental, subs | A | Accepted |
| T71151S | Asphyx due to smothering in furniture, accidental, sequela | A | Accepted |
| T71152A | Asphyxiation due to smothering in furniture, self-harm, init | A | Accepted |
| T71152D | Asphyxiation due to smothering in furniture, self-harm, subs | A | Accepted |
| T71152S | Asphyx due to smothering in furniture, self-harm, sequela | A | Accepted |
| T71153A | Asphyxiation due to smothering in furniture, assault, init | A | Accepted |
| T71153D | Asphyxiation due to smothering in furniture, assault, subs | A | Accepted |
| T71153S | Asphyx due to smothering in furniture, assault, sequela | A | Accepted |
| T71154A | Asphyx due to smothering in furniture, undetermined, init | A | Accepted |
| T71154D | Asphyx due to smothering in furniture, undetermined, subs | A | Accepted |
| T71154S | Asphyx due to smothering in furniture, undetermined, sequela | A | Accepted |
| T71161A | Asphyxiation due to hanging, accidental, initial encounter | A | Accepted |
| T71161D | Asphyxiation due to hanging, accidental, subs encntr | A | Accepted |
| T71161S | Asphyxiation due to hanging, accidental, sequela | A | Accepted |
| T71162A | Asphyxiation due to hanging, intentional self-harm, init | A | Accepted |
| T71162D | Asphyxiation due to hanging, intentional self-harm, subs | A | Accepted |
| T71162S | Asphyxiation due to hanging, intentional self-harm, sequela | A | Accepted |
| T71163A | Asphyxiation due to hanging, assault, initial encounter | A | Accepted |
| T71163D | Asphyxiation due to hanging, assault, subsequent encounter | A | Accepted |
| T71163S | Asphyxiation due to hanging, assault, sequela | A | Accepted |
| T71164A | Asphyxiation due to hanging, undetermined, initial encounter | A | Accepted |
| T71164D | Asphyxiation due to hanging, undetermined, subs encntr | A | Accepted |
| T71164S | Asphyxiation due to hanging, undetermined, sequela | A | Accepted |
| T71191A | Asphyx d/t mech threat to breathe d/t oth cause, acc, init | A | Accepted |
| T71191D | Asphyx d/t mech threat to breathe d/t oth cause, acc, subs | A | Accepted |
| T71191S | Asphyx d/t mech threat to breathe d/t oth cause, acc, sqla | A | Accepted |
| T71192A | Asphyx d/t mech thrt to breathe d/t oth cause, slf-hrm, init | A | Accepted |
| T71192D | Asphyx d/t mech thrt to breathe d/t oth cause, slf-hrm, subs | A | Accepted |
| T71192S | Asphyx d/t mech thrt to breathe d/t oth cause, slf-hrm, sqla | A | Accepted |
| T71193A | Asphyx d/t mech threat to breathe d/t oth cause, asslt, init | A | Accepted |
| T71193D | Asphyx d/t mech threat to breathe d/t oth cause, asslt, subs | A | Accepted |
| T71193S | Asphyx d/t mech threat to breathe d/t oth cause, asslt, sqla | A | Accepted |
| T71194A | Asphyx d/t mech threat to breathe d/t oth cause, undet, init | A | Accepted |
| T71194D | Asphyx d/t mech threat to breathe d/t oth cause, undet, subs | A | Accepted |
| T71194S | Asphyx d/t mech threat to breathe d/t oth cause, undet, sqla | A | Accepted |
| T7120XA | Asphyx d/t sys oxy defic d/t low oxy in air unsp cause, init | A | Accepted |
| T7120XD | Asphyx d/t sys oxy defic d/t low oxy in air unsp cause, subs | A | Accepted |
| T7120XS | Asphyx d/t sys oxy defic d/t low oxy in air unsp cause, sqla | A | Accepted |
| T7121XA | Asphyxiation due to cave-in or falling earth, init encntr | A | Accepted |
| T7121XD | Asphyxiation due to cave-in or falling earth, subs encntr | A | Accepted |
| T7121XS | Asphyxiation due to cave-in or falling earth, sequela | A | Accepted |
| T71221A | Asphyx due to being trapped in a car trunk, accidental, init | A | Accepted |
| T71221D | Asphyx due to being trapped in a car trunk, accidental, subs | A | Accepted |
| T71221S | Asphyx due to being trapped in a car trunk, acc, sequela | A | Accepted |
| T71222A | Asphyx due to being trapped in a car trunk, self-harm, init | A | Accepted |
| T71222D | Asphyx due to being trapped in a car trunk, self-harm, subs | A | Accepted |
| T71222S | Asphyx due to being trapped in a car trunk, slf-hrm, sequela | A | Accepted |
| T71223A | Asphyx due to being trapped in a car trunk, assault, init | A | Accepted |
| T71223D | Asphyx due to being trapped in a car trunk, assault, subs | A | Accepted |
| T71223S | Asphyx due to being trapped in a car trunk, assault, sequela | A | Accepted |
| T71224A | Asphyx due to being trapped in a car trunk, undet, init | A | Accepted |
| T71224D | Asphyx due to being trapped in a car trunk, undet, subs | A | Accepted |
| T71224S | Asphyx due to being trapped in a car trunk, undet, sequela | A | Accepted |
| T71231A | Asphyx due to being trap in a (discarded) refrig, acc, init | A | Accepted |
| T71231D | Asphyx due to being trap in a (discarded) refrig, acc, subs | A | Accepted |
| T71231S | Asphyx due to being trap in a (discarded) refrig, acc, sqla | A | Accepted |
| T71232A | Asphyx d/t being trap in a (discarded) refrig, slf-hrm, init | A | Accepted |
| T71232D | Asphyx d/t being trap in a (discarded) refrig, slf-hrm, subs | A | Accepted |
| T71232S | Asphyx d/t being trap in a (discarded) refrig, slf-hrm, sqla | A | Accepted |
| T71233A | Asphyx d/t being trap in a (discarded) refrig, asslt, init | A | Accepted |
| T71233D | Asphyx d/t being trap in a (discarded) refrig, asslt, subs | A | Accepted |
| T71233S | Asphyx d/t being trap in a (discarded) refrig, asslt, sqla | A | Accepted |
| T71234A | Asphyx d/t being trap in a (discarded) refrig, undet, init | A | Accepted |
| T71234D | Asphyx d/t being trap in a (discarded) refrig, undet, subs | A | Accepted |
| T71234S | Asphyx d/t being trap in a (discarded) refrig, undet, sqla | A | Accepted |
| T7129XA | Asphyx due to being trap in oth low oxygen environment, init | A | Accepted |
| T7129XD | Asphyx due to being trap in oth low oxygen environment, subs | A | Accepted |
| T7129XS | Asphyx due to being trap in oth low oxygen environment, sqla | A | Accepted |
| T719XXA | Asphyxiation due to unspecified cause, initial encounter | A | Accepted |
| T719XXD | Asphyxiation due to unspecified cause, subsequent encounter | A | Accepted |
| T719XXS | Asphyxiation due to unspecified cause, sequela | A | Accepted |
| T730XXA | Starvation, initial encounter | A | Accepted |
| T730XXD | Starvation, subsequent encounter | A | Accepted |
| T730XXS | Starvation, sequela | A | Accepted |
| T731XXA | Deprivation of water, initial encounter | A | Accepted |
| T731XXD | Deprivation of water, subsequent encounter | A | Accepted |
| T731XXS | Deprivation of water, sequela | A | Accepted |
| T732XXA | Exhaustion due to exposure, initial encounter | A | Accepted |
| T732XXD | Exhaustion due to exposure, subsequent encounter | A | Accepted |
| T732XXS | Exhaustion due to exposure, sequela | A | Accepted |
| T733XXA | Exhaustion due to excessive exertion, initial encounter | A | Accepted |
| T733XXD | Exhaustion due to excessive exertion, subsequent encounter | A | Accepted |
| T733XXS | Exhaustion due to excessive exertion, sequela | A | Accepted |
| T738XXA | Other effects of deprivation, initial encounter | A | Accepted |
| T738XXD | Other effects of deprivation, subsequent encounter | A | Accepted |
| T738XXS | Other effects of deprivation, sequela | A | Accepted |
| T739XXA | Effect of deprivation, unspecified, initial encounter | A | Accepted |
| T739XXD | Effect of deprivation, unspecified, subsequent encounter | None | Cannot group |
| T739XXS | Effect of deprivation, unspecified, sequela | None | Cannot group |
| T7401XA | Adult neglect or abandonment, confirmed, initial encounter | F | Accepted |
| T7401XD | Adult neglect or abandonment, confirmed, subs encntr | F | Accepted |
| T7401XS | Adult neglect or abandonment, confirmed, sequela | F | Accepted |
| T7402XA | Child neglect or abandonment, confirmed, initial encounter | F | Accepted |
| T7402XD | Child neglect or abandonment, confirmed, subs encntr | F | Accepted |
| T7402XS | Child neglect or abandonment, confirmed, sequela | F | Accepted |
| T7411XA | Adult physical abuse, confirmed, initial encounter | F | Accepted |
| T7411XD | Adult physical abuse, confirmed, subsequent encounter | F | Accepted |
| T7411XS | Adult physical abuse, confirmed, sequela | F | Accepted |
| T7412XA | Child physical abuse, confirmed, initial encounter | F | Accepted |
| T7412XD | Child physical abuse, confirmed, subsequent encounter | F | Accepted |
| T7412XS | Child physical abuse, confirmed, sequela | F | Accepted |
| T7421XA | Adult sexual abuse, confirmed, initial encounter | F | Accepted |
| T7421XD | Adult sexual abuse, confirmed, subsequent encounter | F | Accepted |
| T7421XS | Adult sexual abuse, confirmed, sequela | F | Accepted |
| T7422XA | Child sexual abuse, confirmed, initial encounter | F | Accepted |
| T7422XD | Child sexual abuse, confirmed, subsequent encounter | F | Accepted |
| T7422XS | Child sexual abuse, confirmed, sequela | F | Accepted |
| T7431XA | Adult psychological abuse, confirmed, initial encounter | F | Accepted |
| T7431XD | Adult psychological abuse, confirmed, subsequent encounter | F | Accepted |
| T7431XS | Adult psychological abuse, confirmed, sequela | F | Accepted |
| T7432XA | Child psychological abuse, confirmed, initial encounter | F | Accepted |
| T7432XD | Child psychological abuse, confirmed, subsequent encounter | F | Accepted |
| T7432XS | Child psychological abuse, confirmed, sequela | F | Accepted |
| T744XXA | Shaken infant syndrome, initial encounter | F | Accepted |
| T744XXD | Shaken infant syndrome, subsequent encounter | F | Accepted |
| T744XXS | Shaken infant syndrome, sequela | F | Accepted |
| T7451XA | Adult forced sexual exploitation, confirmed, init | F | Accepted |
| T7451XD | Adult forced sexual exploitation, confirmed, subs | F | Accepted |
| T7451XS | Adult forced sexual exploitation, confirmed, sequela | F | Accepted |
| T7452XA | Child sexual exploitation, confirmed, initial encounter | F | Accepted |
| T7452XD | Child sexual exploitation, confirmed, subsequent encounter | F | Accepted |
| T7452XS | Child sexual exploitation, confirmed, sequela | F | Accepted |
| T7461XA | Adult forced labor exploitation, confirmed, init | None | Cannot group |
| T7461XD | Adult forced labor exploitation, confirmed, subs | None | Cannot group |
| T7461XS | Adult forced labor exploitation, confirmed, sequela | None | Cannot group |
| T7462XA | Child forced labor exploitation, confirmed, init | None | Cannot group |
| T7462XD | Child forced labor exploitation, confirmed, subs | None | Cannot group |
| T7462XS | Child forced labor exploitation, confirmed, sequela | None | Cannot group |
| T7491XA | Unspecified adult maltreatment, confirmed, initial encounter | None | Cannot group |
| T7491XD | Unspecified adult maltreatment, confirmed, subs encntr | None | Cannot group |
| T7491XS | Unspecified adult maltreatment, confirmed, sequela | None | Cannot group |
| T7492XA | Unspecified child maltreatment, confirmed, initial encounter | None | Cannot group |
| T7492XD | Unspecified child maltreatment, confirmed, subs encntr | None | Cannot group |
| T7492XS | Unspecified child maltreatment, confirmed, sequela | None | Cannot group |
| T74A1XA | Adult financial abuse, confirmed, initial encounter | None | Cannot group |
| T74A1XD | Adult financial abuse, confirmed, subsequent encounter | None | Cannot group |
| T74A1XS | Adult financial abuse, confirmed, sequela | None | Cannot group |
| T74A2XA | Child financial abuse, confirmed, initial encounter | None | Cannot group |
| T74A2XD | Child financial abuse, confirmed, subsequent encounter | None | Cannot group |
| T74A2XS | Child financial abuse, confirmed, sequela | None | Cannot group |
| T7500XA | Unspecified effects of lightning, initial encounter | None | Cannot group |
| T7500XD | Unspecified effects of lightning, subsequent encounter | None | Cannot group |
| T7500XS | Unspecified effects of lightning, sequela | None | Cannot group |
| T7501XA | Shock due to being struck by lightning, initial encounter | A | Accepted |
| T7501XD | Shock due to being struck by lightning, subsequent encounter | A | Accepted |
| T7501XS | Shock due to being struck by lightning, sequela | A | Accepted |
| T7509XA | Other effects of lightning, initial encounter | A | Accepted |
| T7509XD | Other effects of lightning, subsequent encounter | A | Accepted |
| T7509XS | Other effects of lightning, sequela | A | Accepted |
| T751XXA | Unsp effects of drowning and nonfatal submersion, init | None | Cannot group |
| T751XXD | Unsp effects of drowning and nonfatal submersion, subs | None | Cannot group |
| T751XXS | Unsp effects of drowning and nonfatal submersion, sequela | None | Cannot group |
| T7520XA | Unspecified effects of vibration, initial encounter | None | Cannot group |
| T7520XD | Unspecified effects of vibration, subsequent encounter | None | Cannot group |
| T7520XS | Unspecified effects of vibration, sequela | None | Cannot group |
| T7521XA | Pneumatic hammer syndrome, initial encounter | A | Accepted |
| T7521XD | Pneumatic hammer syndrome, subsequent encounter | A | Accepted |
| T7521XS | Pneumatic hammer syndrome, sequela | A | Accepted |
| T7522XA | Traumatic vasospastic syndrome, initial encounter | A | Accepted |
| T7522XD | Traumatic vasospastic syndrome, subsequent encounter | A | Accepted |
| T7522XS | Traumatic vasospastic syndrome, sequela | A | Accepted |
| T7523XA | Vertigo from infrasound, initial encounter | A | Accepted |
| T7523XD | Vertigo from infrasound, subsequent encounter | A | Accepted |
| T7523XS | Vertigo from infrasound, sequela | A | Accepted |
| T7529XA | Other effects of vibration, initial encounter | A | Accepted |
| T7529XD | Other effects of vibration, subsequent encounter | A | Accepted |
| T7529XS | Other effects of vibration, sequela | A | Accepted |
| T753XXA | Motion sickness, initial encounter | A | Accepted |
| T753XXD | Motion sickness, subsequent encounter | A | Accepted |
| T753XXS | Motion sickness, sequela | A | Accepted |
| T754XXA | Electrocution, initial encounter | A | Accepted |
| T754XXD | Electrocution, subsequent encounter | A | Accepted |
| T754XXS | Electrocution, sequela | A | Accepted |
| T7581XA | Effects of abnormal gravitation forces, initial encounter | A | Accepted |
| T7581XD | Effects of abnormal gravitation forces, subsequent encounter | A | Accepted |
| T7581XS | Effects of abnormal gravitation [G] forces, sequela | A | Accepted |
| T7582XA | Effects of weightlessness, initial encounter | A | Accepted |
| T7582XD | Effects of weightlessness, subsequent encounter | A | Accepted |
| T7582XS | Effects of weightlessness, sequela | A | Accepted |
| T75830A | Gulf war illness, initial encounter | A | Accepted |
| T75830D | Gulf war illness, subsequent encounter | A | Accepted |
| T75830S | Gulf war illness, sequela | A | Accepted |
| T75838A | Effects of other war theater, initial encounter | A | Accepted |
| T75838D | Effects of other war theater, subsequent encounter | A | Accepted |
| T75838S | Effects of other war theater, sequela | A | Accepted |
| T7589XA | Other specified effects of external causes, init encntr | A | Accepted |
| T7589XD | Other specified effects of external causes, subs encntr | A | Accepted |
| T7589XS | Other specified effects of external causes, sequela | A | Accepted |
| T7601XA | Adult neglect or abandonment, suspected, initial encounter | F | Accepted |
| T7601XD | Adult neglect or abandonment, suspected, subs encntr | F | Accepted |
| T7601XS | Adult neglect or abandonment, suspected, sequela | F | Accepted |
| T7602XA | Child neglect or abandonment, suspected, initial encounter | F | Accepted |
| T7602XD | Child neglect or abandonment, suspected, subs encntr | F | Accepted |
| T7602XS | Child neglect or abandonment, suspected, sequela | F | Accepted |
| T7611XA | Adult physical abuse, suspected, initial encounter | F | Accepted |
| T7611XD | Adult physical abuse, suspected, subsequent encounter | F | Accepted |
| T7611XS | Adult physical abuse, suspected, sequela | F | Accepted |
| T7612XA | Child physical abuse, suspected, initial encounter | F | Accepted |
| T7612XD | Child physical abuse, suspected, subsequent encounter | F | Accepted |
| T7612XS | Child physical abuse, suspected, sequela | F | Accepted |
| T7621XA | Adult sexual abuse, suspected, initial encounter | F | Accepted |
| T7621XD | Adult sexual abuse, suspected, subsequent encounter | F | Accepted |
| T7621XS | Adult sexual abuse, suspected, sequela | F | Accepted |
| T7622XA | Child sexual abuse, suspected, initial encounter | F | Accepted |
| T7622XD | Child sexual abuse, suspected, subsequent encounter | F | Accepted |
| T7622XS | Child sexual abuse, suspected, sequela | F | Accepted |
| T7631XA | Adult psychological abuse, suspected, initial encounter | F | Accepted |
| T7631XD | Adult psychological abuse, suspected, subsequent encounter | F | Accepted |
| T7631XS | Adult psychological abuse, suspected, sequela | F | Accepted |
| T7632XA | Child psychological abuse, suspected, initial encounter | F | Accepted |
| T7632XD | Child psychological abuse, suspected, subsequent encounter | F | Accepted |
| T7632XS | Child psychological abuse, suspected, sequela | F | Accepted |
| T7651XA | Adult forced sexual exploitation, suspected, init | F | Accepted |
| T7651XD | Adult forced sexual exploitation, suspected, subs | F | Accepted |
| T7651XS | Adult forced sexual exploitation, suspected, sequela | F | Accepted |
| T7652XA | Child sexual exploitation, suspected, initial encounter | F | Accepted |
| T7652XD | Child sexual exploitation, suspected, subsequent encounter | F | Accepted |
| T7652XS | Child sexual exploitation, suspected, sequela | F | Accepted |
| T7661XA | Adult forced labor exploitation, suspected, init | None | Cannot group |
| T7661XD | Adult forced labor exploitation, suspected, subs | None | Cannot group |
| T7661XS | Adult forced labor exploitation, suspected, sequela | None | Cannot group |
| T7662XA | Child forced labor exploitation, suspected, init | None | Cannot group |
| T7662XD | Child forced labor exploitation, suspected, subs | None | Cannot group |
| T7662XS | Child forced labor exploitation, suspected, sequela | None | Cannot group |
| T7691XA | Unspecified adult maltreatment, suspected, initial encounter | None | Cannot group |
| T7691XD | Unspecified adult maltreatment, suspected, subs encntr | None | Cannot group |
| T7691XS | Unspecified adult maltreatment, suspected, sequela | None | Cannot group |
| T7692XA | Unspecified child maltreatment, suspected, initial encounter | None | Cannot group |
| T7692XD | Unspecified child maltreatment, suspected, subs encntr | None | Cannot group |
| T7692XS | Unspecified child maltreatment, suspected, sequela | None | Cannot group |
| T76A1XA | Adult financial abuse, suspected, initial encounter | None | Cannot group |
| T76A1XD | Adult financial abuse, suspected, subsequent encounter | None | Cannot group |
| T76A1XS | Adult financial abuse, suspected, sequela | None | Cannot group |
| T76A2XA | Child financial abuse, suspected, initial encounter | None | Cannot group |
| T76A2XD | Child financial abuse, suspected, subsequent encounter | None | Cannot group |
| T76A2XS | Child financial abuse, suspected, sequela | None | Cannot group |
| T7800XA | Anaphylactic reaction due to unspecified food, init encntr | None | Cannot group |
| T7800XD | Anaphylactic reaction due to unspecified food, subs encntr | None | Cannot group |
| T7800XS | Anaphylactic reaction due to unspecified food, sequela | None | Cannot group |
| T7801XA | Anaphylactic reaction due to peanuts, initial encounter | A | Accepted |
| T7801XD | Anaphylactic reaction due to peanuts, subsequent encounter | A | Accepted |
| T7801XS | Anaphylactic reaction due to peanuts, sequela | A | Accepted |
| T7802XA | Anaphylactic reaction due to shellfish (crustaceans), init | A | Accepted |
| T7802XD | Anaphylactic reaction due to shellfish (crustaceans), subs | A | Accepted |
| T7802XS | Anaphyl reaction due to shellfish (crustaceans), sequela | A | Accepted |
| T7803XA | Anaphylactic reaction due to other fish, initial encounter | A | Accepted |
| T7803XD | Anaphylactic reaction due to other fish, subs encntr | A | Accepted |
| T7803XS | Anaphylactic reaction due to other fish, sequela | A | Accepted |
| T7804XA | Anaphylactic reaction due to fruits and vegetables, init | A | Accepted |
| T7804XD | Anaphylactic reaction due to fruits and vegetables, subs | A | Accepted |
| T7804XS | Anaphylactic reaction due to fruits and vegetables, sequela | A | Accepted |
| T7805XA | Anaphylactic reaction due to tree nuts and seeds, init | A | Accepted |
| T7805XD | Anaphylactic reaction due to tree nuts and seeds, subs | A | Accepted |
| T7805XS | Anaphylactic reaction due to tree nuts and seeds, sequela | A | Accepted |
| T7806XA | Anaphylactic reaction due to food additives, init encntr | A | Accepted |
| T7806XD | Anaphylactic reaction due to food additives, subs encntr | A | Accepted |
| T7806XS | Anaphylactic reaction due to food additives, sequela | A | Accepted |
| T78070A | Anaphyl rct d/t milk /dair prod w tolerance to bkd milk,init | A | Accepted |
| T78070D | Anaphyl rct d/t milk /dair prod w tolerance to bkd milk,subs | A | Accepted |
| T78070S | Anaphyl rct d/t milk /dair prod w tolerance to bkd milk,sqla | A | Accepted |
| T78071A | Anaphyl rct d/t milk and dair prod w rct to bkd milk, init | A | Accepted |
| T78071D | Anaphyl rct d/t milk and dair prod w rct to bkd milk, subs | A | Accepted |
| T78071S | Anaphyl rct d/t milk and dair prod w rct to bkd milk, sqla | A | Accepted |
| T78079A | Anaphyl reaction due to milk and dairy products, unsp, init | A | Accepted |
| T78079D | Anaphyl reaction due to milk and dairy products, unsp, subs | A | Accepted |
| T78079S | Anaphyl reaction due to milk and dairy prod, unsp, sequela | A | Accepted |
| T78080A | Anaphyl react due to egg with tolerance to baked egg, init | A | Accepted |
| T78080D | Anaphyl react due to egg with tolerance to baked egg, subs | A | Accepted |
| T78080S | Anaphyl react due to egg with tolerance to baked egg, sqla | A | Accepted |
| T78081A | Anaphyl reaction due to egg with rct to baked egg, init | A | Accepted |
| T78081D | Anaphyl reaction due to egg with rct to baked egg, subs | A | Accepted |
| T78081S | Anaphyl reaction due to egg with rct to baked egg, sequela | A | Accepted |
| T78089A | Anaphylactic reaction due to eggs, unspecified, init | A | Accepted |
| T78089D | Anaphylactic reaction due to eggs, unspecified, subs | A | Accepted |
| T78089S | Anaphylactic reaction due to eggs, unspecified, sequela | A | Accepted |
| T7809XA | Anaphylactic reaction due to oth food products, init encntr | A | Accepted |
| T7809XD | Anaphylactic reaction due to oth food products, subs encntr | A | Accepted |
| T7809XS | Anaphylactic reaction due to other food products, sequela | A | Accepted |
| T78110A | Oth ad rcts d/t milk /dair prod w tolerance to bkd milk,init | A | Accepted |
| T78110D | Oth ad rcts d/t milk /dair prod w tolerance to bkd milk,subs | A | Accepted |
| T78110S | Oth ad rcts d/t milk /dair prod w tolerance to bkd milk,sqla | A | Accepted |
| T78111A | Oth ad rct d/t milk and dair prod with rct to bkd milk, init | A | Accepted |
| T78111D | Oth ad rct d/t milk and dair prod with rct to bkd milk, subs | A | Accepted |
| T78111S | Oth ad rct d/t milk and dair prod with rct to bkd milk, sqla | A | Accepted |
| T78119A | Oth ad rct d/t milk /dair prod w bkd milk tol/rct,unsp,init | A | Accepted |
| T78119D | Oth ad rct d/t milk /dair prod w bkd milk tol/rct,unsp,subs | A | Accepted |
| T78119S | Oth ad rct d/t milk /dair prod w bkd milk tol/rct,unsp,sqla | A | Accepted |
| T78120A | Other ad food react d/t egg with tolerance to bkd egg, init | A | Accepted |
| T78120D | Other ad food react d/t egg with tolerance to bkd egg, subs | A | Accepted |
| T78120S | Other ad food react d/t egg with tolerance to bkd egg, sqla | A | Accepted |
| T78121A | Other advrs food react d/t egg with rct to baked egg, init | A | Accepted |
| T78121D | Other advrs food react d/t egg with rct to baked egg, subs | A | Accepted |
| T78121S | Other advrs food react d/t egg with rct to baked egg, sqla | A | Accepted |
| T78129A | Other ad food react d/t egg with bkd egg tol/rct, unsp, init | A | Accepted |
| T78129D | Other ad food react d/t egg with bkd egg tol/rct, unsp, subs | A | Accepted |
| T78129S | Other ad food react d/t egg with bkd egg tol/rct, unsp, sqla | A | Accepted |
| T7819XA | Other adverse food reactions, NEC, initial encounter | A | Accepted |
| T7819XD | Other adverse food reactions, NEC, subsequent encounter | A | Accepted |
| T7819XS | Other adverse food reactions, NEC, sequela | A | Accepted |
| T782XXA | Anaphylactic shock, unspecified, initial encounter | A | Accepted |
| T782XXD | Anaphylactic shock, unspecified, subsequent encounter | A | Accepted |
| T782XXS | Anaphylactic shock, unspecified, sequela | A | Accepted |
| T783XXA | Angioneurotic edema, initial encounter | A | Accepted |
| T783XXD | Angioneurotic edema, subsequent encounter | A | Accepted |
| T783XXS | Angioneurotic edema, sequela | A | Accepted |
| T7840XA | Allergy, unspecified, initial encounter | A | Accepted |
| T7840XD | Allergy, unspecified, subsequent encounter | A | Accepted |
| T7840XS | Allergy, unspecified, sequela | A | Accepted |
| T7841XA | Arthus phenomenon, initial encounter | A | Accepted |
| T7841XD | Arthus phenomenon, subsequent encounter | A | Accepted |
| T7841XS | Arthus phenomenon, sequela | A | Accepted |
| T7849XA | Other allergy, initial encounter | A | Accepted |
| T7849XD | Other allergy, subsequent encounter | A | Accepted |
| T7849XS | Other allergy, sequela | A | Accepted |
| T788XXA | Other adverse effects, not elsewhere classified, init encntr | A | Accepted |
| T788XXD | Other adverse effects, not elsewhere classified, subs encntr | A | Accepted |
| T788XXS | Other adverse effects, not elsewhere classified, sequela | A | Accepted |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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