G36.8 — Other specified acute disseminated demyelination
Is G36.8 billable?
Yes, but G36.8 is an unspecified code. G36.8 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, G36.8 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 G36.8 — the more specific alternatives are listed below.
More specific alternatives
G36.8 at a glance
| Code | G36.8 |
|---|---|
| Description | Other specified acute disseminated demyelination |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G36.8 group to?
G36.8 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
As a secondary diagnosis, G36.8 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is G36.8 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G36.8. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Demyelination, demyelinization › disseminated, acute › specified NEC
Excludes1 — never code together — inherited from G36
The conditions below can never be reported together with G36.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- postinfectious encephalitis and encephalomyelitis NOS (G04.01)
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G36.8, but a patient may have both at the same time. When documentation supports it, G36.8 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 G36.8 existed?
G36.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.