M05.46 Rheumatoid myopathy with rheumatoid arthritis of knee

Non-billable header with 3 child codes.

Applies from M05 Rheumatoid arthritis with rheumatoid factor

Excludes1 (never code together)

• rheumatic fever (I00)
• juvenile rheumatoid arthritis (M08.-)
• rheumatoid arthritis of spine (M45.-)

Codes under M05.46

• M05.461 Rheumatoid myopathy with rheumatoid arthritis of right knee
• M05.462 Rheumatoid myopathy with rheumatoid arthritis of left knee
• M05.469 Rheumatoid myopathy with rheumatoid arthritis of unspecified knee

Code annotations containing back-references to M05.46

Back-references to M05

• Code Also: I27.21 Secondary pulmonary arterial hypertension ("rheumatoid arthritis (M05.-)")
• Type 1 Excludes: R76.81 Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis ("rheumatoid arthritis with rheumatoid factor (M05.-)")

Diagnosis Index entries for M05.46

• Rheumatoid › myopathy › knee

Nearby codes

• M05.449 Rheumatoid myopathy with rheumatoid arthritis of unspecified hand
• M05.45 Rheumatoid myopathy with rheumatoid arthritis of hip
• M05.451 Rheumatoid myopathy with rheumatoid arthritis of right hip
• M05.452 Rheumatoid myopathy with rheumatoid arthritis of left hip
• M05.459 Rheumatoid myopathy with rheumatoid arthritis of unspecified hip
• M05.46 Rheumatoid myopathy with rheumatoid arthritis of knee (this code)
• M05.461 Rheumatoid myopathy with rheumatoid arthritis of right knee
• M05.462 Rheumatoid myopathy with rheumatoid arthritis of left knee
• M05.469 Rheumatoid myopathy with rheumatoid arthritis of unspecified knee
• M05.47 Rheumatoid myopathy with rheumatoid arthritis of ankle and foot
• M05.471 Rheumatoid myopathy with rheumatoid arthritis of right ankle and foot