MCMedicalCodingSoftware
M77.9

M77.9: Enthesopathy, unspecified

Billable / specific codeICD-10-CM

M77.9 is a billable, specific ICD-10-CM code for enthesopathy, unspecified. It is valid for submission on a claim.

Check M77.9 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Bone spur NOS
  • Capsulitis NOS
  • Periarthritis NOS
  • Tendinitis NOS

Excludes1 inherited from the categories above M77.9

A category’s note binds every code beneath it.

Written on M77: Other enthesopathies

Excludes2 inherited from the categories above M77.9

Not part of this code, but both may be coded when both are present.

Written on M77: Other enthesopathies

  • bursitis due to use, overuse and pressure (M70.-)
  • osteophyte (M25.7)
  • spinal enthesopathy (M46.0-)

Other codes that can never be billed with M77.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • M67Other disorders of synovium and tendon

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

M77.9 is named in 7 Medicare coverage policies: 0 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

Alphabetic index entries that lead here

  • Enthesopathy(peripheral)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under M77

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.