M86-M90 — Other osteopathies
ICD-10-CM codes M86-M90 cover other osteopathies, within diseases of the musculoskeletal system and connective tissue. The block holds 915 codes across 5 categories, of which 716 are billable and 199 are header codes that cannot be submitted on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- postprocedural osteopathies (M96.-)
Risk adjustment in M86-M90
0 codes in this block map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded. Under-coding here is money left on the table; over-coding here is what audits are for.
- HCC 92 Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis
What else to watch in M86-M90
- 418 codes are laterality-specific. They come in left and right pairs, and the pair is mutually exclusive on a single site: coding both without a bilateral code is a contradiction a scrubber should catch before the payer does.
- 716 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.