G93.5

Billable

ChapterG00–G99

Ranksubcategory

Official Description

Compression of brain

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 6: Diseases of the Nervous System (G00-G99).

Instructional Notes

Includes

Arnold-Chiari type 1 compression of brain
Compression of brain (stem)
Herniation of brain (stem)

Excludes1(Not coded here)

traumatic compression of brain (S06.A-)

General instructions are available for the parent sections:

View CH6 Notes

Clinical Hierarchy

CH6Diseases of the nervous system (G00-G99)

G89-G99Other disorders of the nervous system (G89-G99)

G93Other disorders of brain

G93.5Compression of brain

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G93.5:

chapterCH6

Diseases of the nervous system (G00-G99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to G93.5. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

13 raw paths

Chiari's1 unique routes

malformation

type I→G93.5

Compression2 unique routes

brain (stem)→G93.5(2 variants)

nontraumatic→G93.5

Hernia, hernial (acquired) (recurrent)1 unique routes

foramen magnum→G93.5

Herniation4 unique routes

brain (stem)→G93.5(2 variants)

nontraumatic→G93.5

cerebral→G93.5(2 variants)

nontraumatic→G93.5

Malformation (congenital)1 unique routes

Chiari

Type I→G93.5

Pressure2 unique routes

brain→G93.5

cone, tentorial→G93.5

Syndrome2 unique routes

foramen magnum→G93.5

posterior

fossa compression→G93.5

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 080

Nontraumatic Stupor and Coma with MCC

DRG 081

Nontraumatic Stupor and Coma without MCC

Cross Reference

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