Alphabetic Index FY2027

M12.80

Other specific arthropathies, not elsewhere classified, unspecified site

FY2027Chapter 13: Diseases of the musculoskeletal system and connective tissue/M05–M14 Inflammatory polyarthropathies

BillableComplete code, valid to report

M12.80 (also written M1280) is a billable ICD-10-CM diagnosis code for other specific arthropathies, not elsewhere classified, unspecified site. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 169 codes in category M12 (Other and unspecified arthropathy). The Alphabetic Index lists it under 10 entries. Its coding notes include 2 Excludes1 entries and 10 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from M12 Other and unspecified arthropathy

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • 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)

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 10 entries