L40.50 — Arthropathic psoriasis, unspecified
L40.50 is a billable, specific ICD-10-CM code for arthropathic psoriasis, unspecified. It is valid for submission on a claim.
Risk adjustment
L40.50 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 93 Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders0.617 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
L40.50 is named in 13 Medicare coverage policies — 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52423Billing and Coding: Infliximab and biosimilars
- A55639Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions
- A56416Billing and Coding: Assays for Vitamins and Metabolic Function
- A56432Billing and Coding: Infliximab
How L40.50 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 L40.50.
- Arthritis, arthritic›psoriatic
- Psoriasis›arthropathic
- Arthritis, arthritic›in›psoriasis
- Arthropathy›in›psoriasis NOS
Related codes at this level
Codes that share L40.5. If L40.50 is not quite right, the correct code is usually one of these.
Questions about L40.50
- Is L40.50 a billable ICD-10-CM code?
- Yes. L40.50 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does L40.50 sit in the tabular list?
- Diseases of the skin and subcutaneous tissue (L00-L99), in the block Papulosquamous disorders (L40-L45).