ICD-10 · PDGM grouping
L50 Urticaria
All 9 codes in the L50 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
9
Can lead a claim
9
Cannot lead a claim
0
What CMS assigns to L50
All 9 codes group to MMTA - Other. None of the 9 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in L50
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 |
|---|---|---|---|---|
| L50.0 | Allergic urticaria | Can lead a claim | A | None |
| L50.1 | Idiopathic urticaria | Can lead a claim | A | None |
| L50.2 | Urticaria due to cold and heat | Can lead a claim | A | None |
| L50.3 | Dermatographic urticaria | Can lead a claim | A | None |
| L50.4 | Vibratory urticaria | Can lead a claim | A | None |
| L50.5 | Cholinergic urticaria | Can lead a claim | A | None |
| L50.6 | Contact urticaria | Can lead a claim | A | None |
| L50.8 | Other urticaria | Can lead a claim | A | None |
| L50.9 | Urticaria, 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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