ICD-10-CM 2027
ICD-10 code for cerebral effusion
From the official ICD-10-CM alphabetic index entry “Effusion › cerebral”. Page updated September 29, 2026.
About coding cerebral effusion
The ICD-10-CM code for cerebral effusion is G93.6 (Cerebral edema).
Within G93 (other disorders of brain), G93.6 is specifically for cerebral edema. Related codes cover cerebral cysts (G93.0), Anoxic brain damage, not elsewhere classified (G93.1), benign intracranial hypertension (G93.2), Postviral and related fatigue syndromes (G93.3), other and unspecified encephalopathy (G93.4), compression of brain (G93.5), Reye's syndrome (G93.7), other specified disorders of brain (G93.8) and 1 more.
Don't report G93.6 together with the conditions in its Excludes1 note: cerebral edema due to birth injury (P11.0) and traumatic cerebral edema (S06.1-).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for G93.6)
Common questions about cerebral effusion ICD-10 codes
What is the ICD-10 code for cerebral effusion?
- G93.6 — Cerebral edema.
Is G93.6 billable?
- Yes. G93.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G93.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G93.6 as a principal diagnosis.
Is G93.6 a CC or MCC?
- G93.6 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.