M05.8A
Billable codeOther rheumatoid arthritis with rheumatoid factor of other specified site
The ICD-10 code for other rheumatoid arthritis with rheumatoid factor of other specified site is M05.8A.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M05.80Other rheumatoid arthritis with rheumatoid factor of unspecified site
- M05.81Other rheumatoid arthritis with rheumatoid factor of shouldernon-billable header
- M05.82Other rheumatoid arthritis with rheumatoid factor of elbownon-billable header
- M05.83Other rheumatoid arthritis with rheumatoid factor of wristnon-billable header
- M05.84Other rheumatoid arthritis with rheumatoid factor of handnon-billable header
- M05.85Other rheumatoid arthritis with rheumatoid factor of hipnon-billable header
- M05.86Other rheumatoid arthritis with rheumatoid factor of kneenon-billable header
- M05.87Other rheumatoid arthritis with rheumatoid factor of ankle and footnon-billable header
- M05.89Other rheumatoid arthritis with rheumatoid factor of multiple sites
- M05.8AOther rheumatoid arthritis with rheumatoid factor of other specified site
Associated MS-DRGs
M05.8A can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.