G31.09

Billable

ChapterG00–G99

Ranksubcategory

Official Description

Other frontotemporal neurocognitive disorder

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

Frontal dementia

Use Additional Code

code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)

General instructions are available for the parent sections:

View CH6 Notes View G31 Notes

Clinical Hierarchy

CH6Diseases of the nervous system (G00-G99)

G30-G32Other degenerative diseases of the nervous system (G30-G32)

G31Other degenerative diseases of nervous system, not elsewhere classified

G31.0Frontotemporal dementia

G31.09Other frontotemporal neurocognitive disorder

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G31.09:

categoryG31

Other degenerative diseases of nervous system, not elsewhere classified

View context instructions

chapterCH6

Diseases of the nervous system (G00-G99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to G31.09. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

9 raw paths

Atrophy, atrophic (of)2 unique routes

sclerosis, lobar (of brain)→G31.09(2 variants)

with behavioral disturbance→G31.09

Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)6 unique routes

frontal (lobe)→G31.09(2 variants)

with behavioral disturbance→G31.09

frontotemporal→G31.09(4 variants)

specified NEC→G31.09(2 variants)

with behavioral disturbance→G31.09

Disorder (of)1 unique routes

neurocognitive

frontotemporal, specified NEC→G31.09

MS-DRG Classification

2026 v43.1

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

DRG 056

Degenerative Nervous System Disorders with MCC

DRG 057

Degenerative Nervous System Disorders without MCC

Cross Reference

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