ICD-10 Code M05.30 – Rheumatoid heart disease with rheumatoid arthritis of unspecified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.30 – Rheumatoid heart disease with rheumatoid arthritis of unspecified site
What it is
This code identifies rheumatoid arthritis with cardiac involvement, where the heart disease is linked to rheumatoid disease and the arthritis site is not specified. Use it when documentation supports both conditions together.
Clinical signs
Clinical features vary; refer to documentation. Findings may include documented rheumatoid arthritis plus evidence of rheumatoid heart involvement, such as pericardial, myocardial, or valvular disease noted by the clinician.
When to use this code
Use this code when the record clearly states rheumatoid heart disease and rheumatoid arthritis, but does not identify a specific joint or site. It is appropriate when the provider links the cardiac condition to rheumatoid disease. If the site is documented elsewhere, code more specifically when supported.
Do not use for
Do not use this code for rheumatoid arthritis without heart involvement, or for heart disease unrelated to rheumatoid disease. Check documentation if the arthritis site is specified or if another cardiac diagnosis is stated instead.
Coding tip
Confirm that the provider explicitly documents rheumatoid heart disease, because the heart condition is part of the code meaning.