ICD-10 Code for Osteolysis
The ICD-10-CM code for osteolysis is M89.50 — Osteolysis, unspecified site. This is the code the Alphabetic Index gives for osteolysis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M89.50 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which osteolysis code should you use?
The Alphabetic Index lists 10 codes under Osteolysis. 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
| carpus | M89.54 | Osteolysis, hand | not billable |
| clavicle | M89.51 | Osteolysis, shoulder | not billable |
| femur | M89.55 | Osteolysis, thigh | not billable |
| fibula | M89.56 | Osteolysis, lower leg | not billable |
| finger | M89.54 | Osteolysis, hand | not billable |
| humerus | M89.52 | Osteolysis, upper arm | not billable |
| ilium | M89.58 | Osteolysis, other site | |
| ischium | M89.58 | Osteolysis, other site | |
| metacarpus | M89.54 | Osteolysis, hand | not billable |
| metatarsus | M89.57 | Osteolysis, ankle and foot | not billable |
| multiple sites | M89.59 | Osteolysis, multiple sites | |
| neck | M89.58 | Osteolysis, other site | |
| pubic ramus [pubis] | M89.58 | Osteolysis, other site | |
| radius | M89.53 | Osteolysis, forearm | not billable |
| rib | M89.58 | Osteolysis, other site | |
| scapula | M89.51 | Osteolysis, shoulder | not billable |
| skull | M89.58 | Osteolysis, other site | |
| tarsus | M89.57 | Osteolysis, ankle and foot | not billable |
| tibia | M89.56 | Osteolysis, lower leg | not billable |
| toe | M89.57 | Osteolysis, ankle and foot | not billable |
| ulna | M89.53 | Osteolysis, forearm | not billable |
| vertebra | M89.58 | Osteolysis, 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