Osteoarthritis of knee
Osteoarthritis of knee
M17 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
Degenerative joint disease affecting both the right and left knee simultaneously, arising without a known precipitating cause, injury, or underlying condition — distinguishing it from post-traumatic or secondary osteoarthritis.
Bilateral post-traumatic osteoarthritis of the knee, where degenerative joint disease affecting both knees is attributable to a prior traumatic event rather than primary age-related degeneration.
M17.4 captures bilateral knee osteoarthritis that is secondary in origin — meaning it developed as a consequence of an identifiable underlying cause other than trauma, such as rheumatoid arthritis, gout, septic arthritis, metabolic disease, or congenital deformity — and affects both knees simultaneously.
M17.5 captures osteoarthritis of a single knee that developed secondary to an underlying condition — such as prior inflammatory arthritis, obesity, crystal deposition disease, or metabolic disorder — where the etiology is not post-traumatic and does not fit a more specific secondary OA code.
Degenerative, noninflammatory disease of the knee joint without specification of laterality or etiology — used only when the clinical record does not support a more granular M17 code.