ICD-10 Code for Osteoarthropathy
Also indexed as (hypertrophic)
The ICD-10-CM code for osteoarthropathy is M19.90 — Unspecified osteoarthritis, unspecified site. This is the code the Alphabetic Index gives for osteoarthropathy with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M19.90 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which osteoarthropathy code should you use?
The Alphabetic Index lists 11 codes under Osteoarthropathy. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| specified type NEC | M89.40 | Other hypertrophic osteoarthropathy, unspecified site |
Osteoarthropathy specified type NEC
| carpus | M89.44Not billable | Other hypertrophic osteoarthropathy, hand |
| clavicle | M89.41Not billable | Other hypertrophic osteoarthropathy, shoulder |
| femur | M89.45Not billable | Other hypertrophic osteoarthropathy, thigh |
| fibula | M89.46Not billable | Other hypertrophic osteoarthropathy, lower leg |
| finger | M89.44Not billable | Other hypertrophic osteoarthropathy, hand |
| humerus | M89.42Not billable | Other hypertrophic osteoarthropathy, upper arm |
| ilium | M89.48 | Other hypertrophic osteoarthropathy, other site |
| ischium | M89.48 | Other hypertrophic osteoarthropathy, other site |
| metacarpus | M89.44Not billable | Other hypertrophic osteoarthropathy, hand |
| metatarsus | M89.47Not billable | Other hypertrophic osteoarthropathy, ankle and foot |
| multiple sites | M89.49 | Other hypertrophic osteoarthropathy, multiple sites |
| neck | M89.48 | Other hypertrophic osteoarthropathy, other site |
| pubic ramus [pubis] | M89.48 | Other hypertrophic osteoarthropathy, other site |
| radius | M89.43Not billable | Other hypertrophic osteoarthropathy, forearm |
| rib | M89.48 | Other hypertrophic osteoarthropathy, other site |
| scapula | M89.41Not billable | Other hypertrophic osteoarthropathy, shoulder |
| skull | M89.48 | Other hypertrophic osteoarthropathy, other site |
| tarsus | M89.47Not billable | Other hypertrophic osteoarthropathy, ankle and foot |
| tibia | M89.46Not billable | Other hypertrophic osteoarthropathy, lower leg |
| toe | M89.47Not billable | Other hypertrophic osteoarthropathy, ankle and foot |
| ulna | M89.43Not billable | Other hypertrophic osteoarthropathy, forearm |
| vertebra | M89.48 | Other hypertrophic osteoarthropathy, other site |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources