G93.89 — Other specified disorders of brain
G93.89 is a billable, specific ICD-10-CM code for other specified disorders of brain. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Postradiation encephalopathy
Risk adjustment
G93.89 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.
Medicare coverage
G93.89 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A56612Billing and Coding: CT of the Head
- A56697Billing and Coding: Non-Invasive Vascular Studies
- A56775Billing and Coding: Magnetic Resonance Angiography
How G93.89 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G93.89.
- Automatism
- Ependymopathy
- Gliosis(cerebral)
- Pneumocephalus
- Calcification›cerebral(cortex)
- Calcification›choroid plexus
- Cicatrix›brain
- Congestion, congestive›brain
- Deformity›cerebral, acquired
- Depression›medullary
- Depression›respiratory center
- Disease, diseased›medullary center(idiopathic) (respiratory)
Related codes at this level
Codes that share G93.8. If G93.89 is not quite right, the correct code is usually one of these.
Questions about G93.89
- Is G93.89 a billable ICD-10-CM code?
- Yes. G93.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G93.89 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Other disorders of the nervous system (G89-G99).