M12

Non-Billable

ChapterM00–M99

Rankcategory

Official Description

Other and unspecified arthropathy

Use a more specific code (1 billable, 7 non-billable)

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

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)

Excludes1(Not coded here. Use a different code.)

BillableHas subcodes

CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)

M05-M14Inflammatory polyarthropathies (M05-M14)

M12Other and unspecified arthropathyNot billable

M12.0Chronic postrheumatic arthropathy [Jaccoud]Subcodes

M12.1Kaschin-Beck diseaseSubcodes

M12.2Villonodular synovitis (pigmented)Subcodes

M12.3Palindromic rheumatismSubcodes

M12.4Intermittent hydrarthrosisSubcodes

M12.5Traumatic arthropathySubcodes

M12.8Other specific arthropathies, not elsewhere classifiedSubcodes

M12.9Arthropathy, unspecifiedBillable

The following parent sections contain instructions or notes that apply to M12:

chapterCH13

Diseases of the musculoskeletal system and connective tissue (M00-M99)

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Other and unspecified arthropathy.