M50-M54 — Other dorsopathies
ICD-10-CM codes M50-M54 cover other dorsopathies, within diseases of the musculoskeletal system and connective tissue. The block holds 167 codes across 4 categories, of which 133 are billable and 34 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.
- current injury - see injury of spine by body region
- discitis NOS (M46.4-)
What else to watch in M50-M54
- 4 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.
- 133 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.