ICD-10 · PDGM grouping
Y21-Y33 — Event of undetermined intent
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
105
No clinical group
105
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
None of the 105 codes in Y21-Y33 is assigned a PDGM clinical group. A 30-day period cannot be grouped from any of them, so none can hold the primary position on a home health claim.
Every code in Y21-Y33
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| Y210XXA | Drown while in bathtub, undetermined intent, init | None | Cannot group |
| Y210XXD | Drown while in bathtub, undetermined intent, subs | None | Cannot group |
| Y210XXS | Drown while in bathtub, undetermined intent, sequela | None | Cannot group |
| Y211XXA | Drown after fall into bathtub, undetermined intent, init | None | Cannot group |
| Y211XXD | Drown after fall into bathtub, undetermined intent, subs | None | Cannot group |
| Y211XXS | Drown after fall into bathtub, undetermined intent, sequela | None | Cannot group |
| Y212XXA | Drown while in swimming pool, undetermined intent, init | None | Cannot group |
| Y212XXD | Drown while in swimming pool, undetermined intent, subs | None | Cannot group |
| Y212XXS | Drown while in swimming pool, undetermined intent, sequela | None | Cannot group |
| Y213XXA | Drown after fall into swimming pool, undet intent, init | None | Cannot group |
| Y213XXD | Drown after fall into swimming pool, undet intent, subs | None | Cannot group |
| Y213XXS | Drown after fall into swimming pool, undet intent, sequela | None | Cannot group |
| Y214XXA | Drown in natural water, undetermined intent, init | None | Cannot group |
| Y214XXD | Drown in natural water, undetermined intent, subs | None | Cannot group |
| Y214XXS | Drown in natural water, undetermined intent, sequela | None | Cannot group |
| Y218XXA | Oth drowning and submersion, undetermined intent, init | None | Cannot group |
| Y218XXD | Oth drowning and submersion, undetermined intent, subs | None | Cannot group |
| Y218XXS | Other drowning and submersion, undetermined intent, sequela | None | Cannot group |
| Y219XXA | Unsp drowning and submersion, undetermined intent, init | None | Cannot group |
| Y219XXD | Unsp drowning and submersion, undetermined intent, subs | None | Cannot group |
| Y219XXS | Unsp drowning and submersion, undetermined intent, sequela | None | Cannot group |
| Y22XXXA | Handgun discharge, undetermined intent, initial encounter | None | Cannot group |
| Y22XXXD | Handgun discharge, undetermined intent, subsequent encounter | None | Cannot group |
| Y22XXXS | Handgun discharge, undetermined intent, sequela | None | Cannot group |
| Y230XXA | Shotgun discharge, undetermined intent, initial encounter | None | Cannot group |
| Y230XXD | Shotgun discharge, undetermined intent, subsequent encounter | None | Cannot group |
| Y230XXS | Shotgun discharge, undetermined intent, sequela | None | Cannot group |
| Y231XXA | Hunting rifle discharge, undetermined intent, init encntr | None | Cannot group |
| Y231XXD | Hunting rifle discharge, undetermined intent, subs encntr | None | Cannot group |
| Y231XXS | Hunting rifle discharge, undetermined intent, sequela | None | Cannot group |
| Y232XXA | Military firearm discharge, undetermined intent, init encntr | None | Cannot group |
| Y232XXD | Military firearm discharge, undetermined intent, subs encntr | None | Cannot group |
| Y232XXS | Military firearm discharge, undetermined intent, sequela | None | Cannot group |
| Y233XXA | Machine gun discharge, undetermined intent, init encntr | None | Cannot group |
| Y233XXD | Machine gun discharge, undetermined intent, subs encntr | None | Cannot group |
| Y233XXS | Machine gun discharge, undetermined intent, sequela | None | Cannot group |
| Y238XXA | Oth larger firearm discharge, undetermined intent, init | None | Cannot group |
| Y238XXD | Oth larger firearm discharge, undetermined intent, subs | None | Cannot group |
| Y238XXS | Other larger firearm discharge, undetermined intent, sequela | None | Cannot group |
| Y239XXA | Unsp larger firearm discharge, undetermined intent, init | None | Cannot group |
| Y239XXD | Unsp larger firearm discharge, undetermined intent, subs | None | Cannot group |
| Y239XXS | Unsp larger firearm discharge, undetermined intent, sequela | None | Cannot group |
| Y240XXA | Airgun discharge, undetermined intent, initial encounter | None | Cannot group |
| Y240XXD | Airgun discharge, undetermined intent, subsequent encounter | None | Cannot group |
| Y240XXS | Airgun discharge, undetermined intent, sequela | None | Cannot group |
| Y248XXA | Other firearm discharge, undetermined intent, init encntr | None | Cannot group |
| Y248XXD | Other firearm discharge, undetermined intent, subs encntr | None | Cannot group |
| Y248XXS | Other firearm discharge, undetermined intent, sequela | None | Cannot group |
| Y249XXA | Unsp firearm discharge, undetermined intent, init encntr | None | Cannot group |
| Y249XXD | Unsp firearm discharge, undetermined intent, subs encntr | None | Cannot group |
| Y249XXS | Unspecified firearm discharge, undetermined intent, sequela | None | Cannot group |
| Y25XXXA | Contact w explosive material, undetermined intent, init | None | Cannot group |
| Y25XXXD | Contact w explosive material, undetermined intent, subs | None | Cannot group |
| Y25XXXS | Contact w explosive material, undetermined intent, sequela | None | Cannot group |
| Y26XXXA | Exposure to smoke, fire and flames, undet intent, init | None | Cannot group |
| Y26XXXD | Exposure to smoke, fire and flames, undet intent, subs | None | Cannot group |
| Y26XXXS | Exposure to smoke, fire and flames, undet intent, sequela | None | Cannot group |
| Y270XXA | Contact w steam and hot vapors, undetermined intent, init | None | Cannot group |
| Y270XXD | Contact w steam and hot vapors, undetermined intent, subs | None | Cannot group |
| Y270XXS | Contact w steam and hot vapors, undetermined intent, sequela | None | Cannot group |
| Y271XXA | Contact with hot tap water, undetermined intent, init encntr | None | Cannot group |
| Y271XXD | Contact with hot tap water, undetermined intent, subs encntr | None | Cannot group |
| Y271XXS | Contact with hot tap water, undetermined intent, sequela | None | Cannot group |
| Y272XXA | Contact with hot fluids, undetermined intent, init encntr | None | Cannot group |
| Y272XXD | Contact with hot fluids, undetermined intent, subs encntr | None | Cannot group |
| Y272XXS | Contact with hot fluids, undetermined intent, sequela | None | Cannot group |
| Y273XXA | Contact w hot household appliance, undetermined intent, init | None | Cannot group |
| Y273XXD | Contact w hot household appliance, undetermined intent, subs | None | Cannot group |
| Y273XXS | Contact w hot household appliance, undet intent, sequela | None | Cannot group |
| Y278XXA | Contact w oth hot objects, undetermined intent, init encntr | None | Cannot group |
| Y278XXD | Contact w oth hot objects, undetermined intent, subs encntr | None | Cannot group |
| Y278XXS | Contact with other hot objects, undetermined intent, sequela | None | Cannot group |
| Y279XXA | Contact w unsp hot objects, undetermined intent, init encntr | None | Cannot group |
| Y279XXD | Contact w unsp hot objects, undetermined intent, subs encntr | None | Cannot group |
| Y279XXS | Contact with unsp hot objects, undetermined intent, sequela | None | Cannot group |
| Y280XXA | Contact with sharp glass, undetermined intent, init encntr | None | Cannot group |
| Y280XXD | Contact with sharp glass, undetermined intent, subs encntr | None | Cannot group |
| Y280XXS | Contact with sharp glass, undetermined intent, sequela | None | Cannot group |
| Y281XXA | Contact with knife, undetermined intent, initial encounter | None | Cannot group |
| Y281XXD | Contact with knife, undetermined intent, subs encntr | None | Cannot group |
| Y281XXS | Contact with knife, undetermined intent, sequela | None | Cannot group |
| Y282XXA | Contact w sword or dagger, undetermined intent, init encntr | None | Cannot group |
| Y282XXD | Contact w sword or dagger, undetermined intent, subs encntr | None | Cannot group |
| Y282XXS | Contact with sword or dagger, undetermined intent, sequela | None | Cannot group |
| Y288XXA | Contact w oth sharp object, undetermined intent, init encntr | None | Cannot group |
| Y288XXD | Contact w oth sharp object, undetermined intent, subs encntr | None | Cannot group |
| Y288XXS | Contact with oth sharp object, undetermined intent, sequela | None | Cannot group |
| Y289XXA | Contact w unsp sharp object, undetermined intent, init | None | Cannot group |
| Y289XXD | Contact w unsp sharp object, undetermined intent, subs | None | Cannot group |
| Y289XXS | Contact with unsp sharp object, undetermined intent, sequela | None | Cannot group |
| Y29XXXA | Contact with blunt object, undetermined intent, init encntr | None | Cannot group |
| Y29XXXD | Contact with blunt object, undetermined intent, subs encntr | None | Cannot group |
| Y29XXXS | Contact with blunt object, undetermined intent, sequela | None | Cannot group |
| Y30XXXA | Fall, jump or pushed from a high place, undet intent, init | None | Cannot group |
| Y30XXXD | Fall, jump or pushed from a high place, undet intent, subs | None | Cannot group |
| Y30XXXS | Fall, jump or pushed from a high place, undet intent, sqla | None | Cannot group |
| Y31XXXA | Fall/lying/running bef/into moving obj, undet intent, init | None | Cannot group |
| Y31XXXD | Fall/lying/running bef/into moving obj, undet intent, subs | None | Cannot group |
| Y31XXXS | Fall/lying/running bef/into moving obj, undet intent, sqla | None | Cannot group |
| Y32XXXA | Crashing of motor vehicle, undetermined intent, init encntr | None | Cannot group |
| Y32XXXD | Crashing of motor vehicle, undetermined intent, subs encntr | None | Cannot group |
| Y32XXXS | Crashing of motor vehicle, undetermined intent, sequela | None | Cannot group |
| Y33XXXA | Other specified events, undetermined intent, init encntr | None | Cannot group |
| Y33XXXD | Other specified events, undetermined intent, subs encntr | None | Cannot group |
| Y33XXXS | Other specified events, undetermined intent, sequela | None | Cannot group |
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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