Rheumatoid Arthritis ICD-10 Codes: A Quick Guide for Medical Billing
Meta Description: Need the correct ICD-10 code for rheumatoid arthritis (RA)? Here’s a simple breakdown of RA diagnosis codes for accurate medical billing and documentation.
What Is the ICD-10 Code for Rheumatoid Arthritis?
The primary ICD-10 code for rheumatoid arthritis is:
M06.9 – Rheumatoid arthritis, unspecified
However, RA has multiple subclassifications based on:
✔ Affected joints (hands, knees, spine)
✔ Seropositive vs. seronegative status
✔ Extra-articular manifestations (lungs, heart, skin)
Common Rheumatoid Arthritis ICD-10 Codes
| Code | Description |
|---|---|
| M05.xx | Seropositive RA (RF or anti-CCP positive) |
| M06.0x | Seronegative RA (RF negative) |
| M06.1 | Adult-onset Still’s disease |
| M06.2 | Rheumatoid bursitis |
| M06.3 | Rheumatoid nodule |
| M06.4 | Inflammatory polyarthropathy |
| M06.8 | Other specified RA |
| M06.9 | Unspecified RA (most commonly used) |
🔹 Note: Replace “x” with additional digits for specific joint involvement (e.g., M05.74 = RA with rheumatoid lung disease).
When to Use Which Code?
- M05.xx → If lab tests confirm RF/anti-CCP antibodies.
- M06.0x → If RA is present but seronegative.
- M06.9 → If no further specification is documented.
Why Accurate Coding Matters
✅ Ensures proper insurance reimbursement
✅ Helps track disease progression in EHR systems
✅ Avoids claim denials due to incorrect coding
Need More Specific Codes?
Check the CDC ICD-10-CM manual or consult your billing specialist.
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