ICD-10 · PDGM grouping
L49 Exfoliation due to erythematous conditions according to extent of body surface involved
All 10 codes in the L49 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
10
Can lead a claim
0
Cannot lead a claim
10
What CMS assigns to L49
None of the 10 codes is assigned a clinical group. None of the 10 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to all 10.
Code first
CMS grouper convention 107, on all 10 codes. Code first:
- (Staphylococcal) scalded skin syndrome (L00)
- Ritter's disease (L00)
- Stevens-Johnson syndrome (L51.1)
- Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome (L51.3)
- Toxic epidermal necrolysis (L51.2)
- erythematous condition causing exfoliation, such as:
Every code in L49
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 |
|---|---|---|---|---|
| L49.0 | Exfoliation due to erythematous condition involving less than 10 percent of body surfaceCMS: Exfoliatn due to erythemat cond w < 10 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.1 | Exfoliation due to erythematous condition involving 10-19 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 10-19 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.2 | Exfoliation due to erythematous condition involving 20-29 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 20-29 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.3 | Exfoliation due to erythematous condition involving 30-39 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 30-39 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.4 | Exfoliation due to erythematous condition involving 40-49 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 40-49 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.5 | Exfoliation due to erythematous condition involving 50-59 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 50-59 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.6 | Exfoliation due to erythematous condition involving 60-69 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 60-69 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.7 | Exfoliation due to erythematous condition involving 70-79 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 70-79 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.8 | Exfoliation due to erythematous condition involving 80-89 percent of body surfaceCMS: Exfoliatn due to erythemat cond w 80-89 pct of body surface | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| L49.9 | Exfoliation due to erythematous condition involving 90 or more percent of body surfaceCMS: Exfoliatn d/t erythemat cond w 90 or more pct of body surfc | Cannot lead a claimUnacceptable principal diagnosis, code is 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue