All ICD10 Codes

M77

Non-Billable
ChapterM00–M99
Rankcategory
Official Description

Other enthesopathies

Use a more specific code (2 billable, 6 non-billable)
M77.0Medial epicondylitishas subcodesM77.1Lateral epicondylitishas subcodesM77.2Periarthritis of wristhas subcodesM77.3Calcaneal spurhas subcodesM77.4Metatarsalgiahas subcodesM77.5Other enthesopathy of foot and anklehas subcodesM77.8Other enthesopathies, not elsewhere classifiedM77.9Enthesopathy, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

CH13 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
Excludes2(Not included here. Code separately if applicable.)
  • bursitis due to use, overuse and pressure (M70.-)
  • osteophyte (M25.7)
  • spinal enthesopathy (M46.0-)

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M70-M79Other soft tissue disorders (M70-M79)
M77Other enthesopathiesNot billable
M77.0Medial epicondylitisSubcodes
M77.1Lateral epicondylitisSubcodes
M77.2Periarthritis of wristSubcodes
M77.3Calcaneal spurSubcodes
M77.4MetatarsalgiaSubcodes
M77.5Other enthesopathy of foot and ankleSubcodes
M77.8Other enthesopathies, not elsewhere classifiedBillable
M77.9Enthesopathy, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M77:

chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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