L50.9 — Urticaria, unspecified
L50.9 is a billable, specific ICD-10-CM code for urticaria, unspecified. It is valid for submission on a claim.
Other codes that can never be billed with L50.9
These codes carry an Excludes1 note pointing at L50.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L50.9 alone.
- L25.5Unspecified contact dermatitis due to plants, except food
Risk adjustment
L50.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
L50.9 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52448Billing and Coding: Omalizumab and biosimilar, OMLYCLO® (omalizumab-igec)
- A56844Billing and Coding: RAST Type Tests
- A57044Billing and Coding: Removal of Benign Skin Lesions
- A57181Billing and Coding: Allergy Testing
How L50.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L50.9.
- Urticaria
Related codes at this level
Codes that share L50. If L50.9 is not quite right, the correct code is usually one of these.
Questions about L50.9
- Is L50.9 a billable ICD-10-CM code?
- Yes. L50.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does L50.9 sit in the tabular list?
- Diseases of the skin and subcutaneous tissue (L00-L99), in the block Urticaria and erythema (L49-L54).