ICD-10 · PDGM grouping
Y27 Contact with steam, hot vapors and hot objects, undetermined intent
All 18 codes in the Y27 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
18
Can lead a claim
0
Cannot lead a claim
18
What CMS assigns to Y27
None of the 18 codes is assigned a clinical group. None of the 18 is assigned a comorbidity subgroup. None can lead a claim.
Every code in Y27
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| Y27.0 Contact with steam and hot vapors, undetermined intent | ||||
| Y27.0XXA | Contact with steam and hot vapors, undetermined intent, initial encounterCMS: Contact w steam and hot vapors, undetermined intent, init | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.0XXD | Contact with steam and hot vapors, undetermined intent, subsequent encounterCMS: Contact w steam and hot vapors, undetermined intent, subs | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.0XXS | Contact with steam and hot vapors, undetermined intent, sequelaCMS: Contact w steam and hot vapors, undetermined intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.1 Contact with hot tap water, undetermined intent | ||||
| Y27.1XXA | Contact with hot tap water, undetermined intent, initial encounterCMS: Contact with hot tap water, undetermined intent, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.1XXD | Contact with hot tap water, undetermined intent, subsequent encounterCMS: Contact with hot tap water, undetermined intent, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.1XXS | Contact with hot tap water, undetermined intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.2 Contact with hot fluids, undetermined intent | ||||
| Y27.2XXA | Contact with hot fluids, undetermined intent, initial encounterCMS: Contact with hot fluids, undetermined intent, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.2XXD | Contact with hot fluids, undetermined intent, subsequent encounterCMS: Contact with hot fluids, undetermined intent, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.2XXS | Contact with hot fluids, undetermined intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.3 Contact with hot household appliance, undetermined intent | ||||
| Y27.3XXA | Contact with hot household appliance, undetermined intent, initial encounterCMS: Contact w hot household appliance, undetermined intent, init | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.3XXD | Contact with hot household appliance, undetermined intent, subsequent encounterCMS: Contact w hot household appliance, undetermined intent, subs | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.3XXS | Contact with hot household appliance, undetermined intent, sequelaCMS: Contact w hot household appliance, undet intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.8 Contact with other hot objects, undetermined intent | ||||
| Y27.8XXA | Contact with other hot objects, undetermined intent, initial encounterCMS: Contact w oth hot objects, undetermined intent, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.8XXD | Contact with other hot objects, undetermined intent, subsequent encounterCMS: Contact w oth hot objects, undetermined intent, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.8XXS | Contact with other hot objects, undetermined intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.9 Contact with unspecified hot objects, undetermined intent | ||||
| Y27.9XXA | Contact with unspecified hot objects, undetermined intent, initial encounterCMS: Contact w unsp hot objects, undetermined intent, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.9XXD | Contact with unspecified hot objects, undetermined intent, subsequent encounterCMS: Contact w unsp hot objects, undetermined intent, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| Y27.9XXS | Contact with unspecified hot objects, undetermined intent, sequelaCMS: Contact with unsp hot objects, undetermined intent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. 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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