G31.09

Other frontotemporal neurocognitive disorder

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC127

Dementia, Mild or Unspecified

CMS-HCC ESRD V24

HCC52

Dementia Without Complication

RxHCC V08

RXHCC112

Dementia, Except Alzheimer's Disease

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · G31.09
Use additional

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

Synonyms

Frontal dementia

Inherited from G31Oth degenerative diseases of nervous system, NEC
Excludes 2

Reye's syndrome (G93.7)

Use additional

code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify: dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4) dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-) dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3) dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2) dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0) mild neurocognitive disorder due to known physiological condition (F06.7-)

Inherited from chapter 6Diseases of the nervous system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for G31.09

FY 2026 ›