G93.4 — Other and unspecified encephalopathy
G93.4 is a non-billable header ICD-10-CM code for other and unspecified encephalopathy. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Other codes that can never be billed with G93.4
These codes carry an Excludes1 note pointing at G93.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G93.4 alone.
- G04Encephalitis, myelitis and encephalomyelitis
Risk adjustment
G93.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead G93.4
7 child codes. Green means billable.
- G93.40Encephalopathy, unspecified
- G93.41Metabolic encephalopathy
- G93.42Megalencephalic leukoencephalopathy with subcortical cysts
- G93.43Leukoencephalopathy with calcifications and cysts
- G93.44Adult-onset leukodystrophy with axonal spheroids
- G93.45Developmental and epileptic encephalopathy
- G93.49Other encephalopathy
Related codes at this level
Codes that share G93. If G93.4 is not quite right, the correct code is usually one of these.
Questions about G93.4
- Is G93.4 a billable ICD-10-CM code?
- No. G93.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does G93.4 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Other disorders of the nervous system (G89-G99).