---
title: "ICD-10-CM G44.091: Other trigeminal autonomic cephalgias… | BillingBrief"
description: "ICD-10-CM code G44.091: Other trigeminal autonomic cephalgias (TAC), intractable. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/g44.091/"
language: "en"
---

# G44.091 Other trigeminal autonomic cephalgias (TAC), intractable

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Other trigeminal autonomic cephalgias (TAC), intractable

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   headache NOS ([R51.9](https://billingbrief.com/icd10/r51.9/))

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   atypical facial pain (G50.1)
-   headache due to lumbar puncture (G97.1)
-   migraines (G43.-)
-   trigeminal neuralgia (G50.0)

## Related codes

-   [`G44.029` Chronic cluster headache, not intractable ICD-10-CM](https://billingbrief.com/icd10/g44.029/)
-   [`G44.031` Episodic paroxysmal hemicrania, intractable ICD-10-CM](https://billingbrief.com/icd10/g44.031/)
-   [`G44.039` Episodic paroxysmal hemicrania, not intractable ICD-10-CM](https://billingbrief.com/icd10/g44.039/)
-   [`G44.041` Chronic paroxysmal hemicrania, intractable ICD-10-CM](https://billingbrief.com/icd10/g44.041/)
-   [`G44.049` Chronic paroxysmal hemicrania, not intractable ICD-10-CM](https://billingbrief.com/icd10/g44.049/)
-   [`G44.051` Short lasting unilateral neuralgiform headache with conjunctival injection and tearing ICD-10-CM](https://billingbrief.com/icd10/g44.051/)
-   [`G44.059` Short lasting unilateral neuralgiform headache with conjunctival injection and tearing ICD-10-CM](https://billingbrief.com/icd10/g44.059/)
-   [`G44.099` Other trigeminal autonomic cephalgias (TAC), not intractable ICD-10-CM](https://billingbrief.com/icd10/g44.099/)

## Common questions

### Is G44.091 a billable code?

Yes. G44.091 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

G44 Other headache syndromes

Chapter

Diseases of the nervous system

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).