G93.9 — Disorder of brain, unspecified

BillableUnspecified

Is G93.9 billable?

Yes, but G93.9 is an unspecified code. G93.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, G93.9 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 G93.9 — the more specific alternatives are listed below.

More specific alternatives

G93.9 at a glance

Code	G93.9
Description	Disorder of brain, unspecified
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does G93.9 group to?

G93.9 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.

070Other Cerebrovascular Disorders with MCCmedical
071Other Cerebrovascular Disorders with CCmedical
072Other Cerebrovascular Disorders without CC/MCCmedical

How is G93.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to G93.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

Damage › brain
Disease, diseased › brain
Lesion › brain (s) (nontraumatic)
Disease, diseased › brain › organic

Excludes2 — not included here — inherited from Chapter 6

The conditions below are not part of G93.9, but a patient may have both at the same time. When documentation supports it, G93.9 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 G93.9 existed?

G93.9 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.