ICD-10 · PDGM grouping
L51 Erythema multiforme
All 6 codes in the L51 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.
Codes in family
6
Can lead a claim
6
Cannot lead a claim
0
What CMS assigns to L51
All 6 codes group to MMTA - Other. None of the 6 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in L51
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 |
|---|---|---|---|---|
| L51.0 | Nonbullous erythema multiforme | Can lead a claim | A | None |
| L51.1 | Stevens-Johnson syndrome | Can lead a claim | A | None |
| L51.2 | Toxic epidermal necrolysis [Lyell] | Can lead a claim | A | None |
| L51.3 | Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndromeCMS: Stevens-Johnson synd-tox epdrml necrolysis overlap syndrome | Can lead a claim | A | None |
| L51.8 | Other erythema multiforme | Can lead a claim | A | None |
| L51.9 | Erythema multiforme, unspecified | Can lead a claim | A | 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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