ICD-10 G44
Non-Billable HeaderOther headache syndromes
About ICD-10-CM G44
ICD-10-CM code G44 represents Other headache syndromes. This is a non-billable header code in the Nervous System chapter (block G44). The 2026 edition of ICD-10-CM G44 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with G44. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- headache NOS (R51.9)
Type 2 Excludes
Not included here, the excluded code is not part of G44, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- atypical facial pain (G50.1)
- headache due to lumbar puncture (G97.1)
- migraines (G43.-)
- trigeminal neuralgia (G50.0)
Medicare LCD Coverage for G44
Local Coverage Determinations (LCDs) from CMS MACs that list G44 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G44.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but G44 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with G44
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To G44
Other codes in section G40-G47 (Episodic and paroxysmal disorders).
ICD-10 G44, Billing FAQ
Is ICD-10 code G44 billable? +
No, G44 is a non-billable header code. Use a more specific child code from block G44 when submitting claims.
What codes are Type 1 Excludes for G44? +
Type 1 Excludes (never code together with G44): headache NOS (R51.9)
What codes are Type 2 Excludes for G44? +
Type 2 Excludes (may be coded together when both conditions exist): atypical facial pain (G50.1); headache due to lumbar puncture (G97.1); migraines (G43.-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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