G31.09 — Other frontotemporal neurocognitive disorder
G31.09 is a billable, specific ICD-10-CM code for other frontotemporal neurocognitive disorder. It is valid for submission on a claim.
Use additional code
Add a secondary code to capture the detail described below.
- code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Frontal dementia
Risk adjustment
G31.09 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 127 Dementia, Mild or Unspecified0.341 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
G31.09 is named in 15 Medicare coverage policies — 13 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56562Billing and Coding: Health and Behavior Assessment/Interventionnot covered
- A53134Billing and Coding: NCD Coding Article for Positron Emission Tomography (PET) Scans Used for Non-Oncologic Conditions
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
How G31.09 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 G31.09.
- Atrophy, atrophic›sclerosis, lobar(of brain)
- Dementia›frontal(lobe)
- Dementia›frontotemporal
- Atrophy, atrophic›sclerosis, lobar›with behavioral disturbance
- Dementia›frontal›with behavioral disturbance
- Dementia›frontotemporal›specified NEC
- Dementia›frontotemporal›with behavioral disturbance
- Disorder›neurocognitive›frontotemporal, specified NEC
- Dementia›frontotemporal›specified NEC›with behavioral disturbance
Related codes at this level
Codes that share G31.0. If G31.09 is not quite right, the correct code is usually one of these.
Questions about G31.09
- Is G31.09 a billable ICD-10-CM code?
- Yes. G31.09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G31.09 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Other degenerative diseases of the nervous system (G30-G32).