Other streptococcal arthritis, right knee

This diagnosis code signifies an inflammatory condition of the right knee joint caused by a streptococcal bacterial infection, but not specifically a post-infective or post-rheumatic fever arthritis. It indicates the presence of an active infection directly affecting the joint, leading to pain, swelling, and restricted movement.

This code is appropriate when documentation clearly states streptococcal arthritis affecting the right knee, and the infection is not classified as post-infective or related to rheumatic fever. Supporting documentation should include positive streptococcal cultures from synovial fluid or blood, or a definitive clinical diagnosis by a physician.

• Ensure the documentation specifies "other" streptococcal arthritis to differentiate from post-infective or post-rheumatic fever types.
• Verify laterality (right knee) is explicitly stated; do not assume.
• Always sequence the underlying streptococcal infection code (e.g., B95.0) as a secondary diagnosis, if applicable and documented.