G35.A — Relapsing-remitting multiple sclerosis
Is G35.A billable?
Yes — G35.A is billable for FY2027. G35.A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. G35.A may be submitted for encounters from October 1, 2026 through September 30, 2027.
G35.A at a glance
| Code | G35.A |
|---|---|
| Description | Relapsing-remitting multiple sclerosis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G35.A group to?
G35.A sits in MDC 01 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.
- 058Multiple Sclerosis and Cerebellar Ataxia with MCCmedical
- 059Multiple Sclerosis and Cerebellar Ataxia with CCmedical
- 060Multiple Sclerosis and Cerebellar Ataxia without CC/MCCmedical
How is G35.A listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G35.A. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Sclerosis, sclerotic › multiple › relapsing-remitting
Excludes1 — never code together
The conditions below can never be reported together with G35.A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- demyelinating disease of central nervous system, unspecified (G37.9)
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G35.A, but a patient may have both at the same time. When documentation supports it, G35.A and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- 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 G35.A existed?
G35.A first appears in FY2026.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with G35.A?
ICD-10-CM declares these codes mutually exclusive with G35.A — exactly one of each pair can be correct for a given encounter.