M13.86 Other specified arthritis, knee

Non-billable header with 3 child codes.

Applies from M13 Other arthritis

Excludes1 (never code together)

• arthrosis (M15-M19)
• osteoarthritis (M15-M19)

Applies from M13.8 Other specified arthritis

Applicable to

• Allergic arthritis

Excludes1 (never code together)

• osteoarthritis (M15-M19)

Codes under M13.86

• M13.861 Other specified arthritis, right knee
• M13.862 Other specified arthritis, left knee
• M13.869 Other specified arthritis, unspecified knee

Diagnosis Index entries for M13.86

• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › specified form NEC › knee

Nearby codes

• M13.849 Other specified arthritis, unspecified hand
• M13.85 Other specified arthritis, hip
• M13.851 Other specified arthritis, right hip
• M13.852 Other specified arthritis, left hip
• M13.859 Other specified arthritis, unspecified hip
• M13.86 Other specified arthritis, knee (this code)
• M13.861 Other specified arthritis, right knee
• M13.862 Other specified arthritis, left knee
• M13.869 Other specified arthritis, unspecified knee
• M13.87 Other specified arthritis, ankle and foot
• M13.871 Other specified arthritis, right ankle and foot