M06.8A — Other specified rheumatoid arthritis, other specified site

BillableUnspecified

Is M06.8A billable?

Yes, but M06.8A is an unspecified code. M06.8A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M06.8A is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting M06.8A — the more specific alternatives are listed below.

More specific alternatives

M06.8A at a glance

Code	M06.8A
Description	Other specified rheumatoid arthritis, other specified site
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does M06.8A group to?

M06.8A sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

545Connective Tissue Disorders with MCCmedical
546Connective Tissue Disorders with CCmedical
547Connective Tissue Disorders without CC/MCCmedical

How is M06.8A listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to M06.8A. They show the wording a clinician may have documented, which often differs from the Tabular description.

Arthritis, arthritic › rheumatoid › specified type NEC › specified site NEC (acute) (chronic) (nonpyogenic) (subacute)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M06.8A, but a patient may have both at the same time. When documentation supports it, M06.8A and the excluded code may both be reported.

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)

How long has M06.8A existed?

M06.8A first appears in FY2021 (FY2020 is not available, so it may have appeared then).

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.