MCMedicalCodingSoftware
G92.9

G92.9: Unspecified toxic encephalopathy

Billable / specific codeICD-10-CM

G92.9 is a billable, specific ICD-10-CM code for unspecified toxic encephalopathy. It is valid for submission on a claim.

Check G92.9 with the rest of the claim: free scrubber

Code first

The underlying condition must be sequenced before this code.

  • poisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4)

Use additional code

Add a secondary code to capture the detail described below.

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

G92.9 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57483Billing and Coding: Visual Fields

Alphabetic index entries that lead here

  • Encephalopathy›toxic
  • Myelitis›toxic

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G92

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.