ICD-10 Code A54.40 – Gonococcal infection of musculoskeletal system, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A54.40 – Gonococcal infection of musculoskeletal system, unspecified
What it is
This code identifies a gonococcal infection affecting the musculoskeletal system when the specific site is not documented. It refers to infection caused by Neisseria gonorrhoeae involving joints, bones, or related structures.
Clinical signs
Findings may include joint pain, swelling, warmth, or reduced range of motion, but documentation may be limited. Clinical features vary; refer to documentation.
When to use this code
Use A54.40 when the record confirms gonococcal involvement of the musculoskeletal system but does not name a more specific site. It fits cases where the provider documents septic arthritis, osteomyelitis, or another musculoskeletal manifestation without further detail. If the site is specified, choose the more precise code.
Do not use for
Do not use this code for nongonococcal joint or bone infections, or for gonococcal infection limited to another body system. Check documentation if the musculoskeletal site is not clearly supported.
Coding tip
Before assigning A54.40, confirm both the gonococcal cause and the musculoskeletal involvement in the provider’s note.