ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.4 > M89.46 M89.46 Other hypertrophic osteoarthropathy, lower leg Non-Billable/Non-Specific Codes M89.461Other hypertrophic osteoarthropathy, right lower legM89.462Other hypertrophic osteoarthropathy, left lower legM89.469Other hypertrophic osteoarthropathy, unspecified lower leg