ICD-10-CM > M00-M99 > M15-M19 > M19 > M19.0 > M19.04 M19.04 Primary osteoarthritis, hand Non-Billable/Non-Specific Type 2 Excludes primary osteoarthritis of first carpometacarpal joint (M18.0-, M18.1-) Codes M19.041Primary osteoarthritis, right handM19.042Primary osteoarthritis, left handM19.049Primary osteoarthritis, unspecified hand