G44.3 – Post-traumatic headache
ICD-10-CM 2027 diagnosis code · Episodic and paroxysmal disorders
ICD-10-CM code
G44.3
- Code
G44.3(claims format:G443)- Description
- Post-traumatic headache
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G40-G47 Episodic and paroxysmal disorders
- Parent codes
- G44
Billable codes under G44.3
G44.3 is a header code and cannot be used on claims. Choose the most specific code:
- G44.30 – Post-traumatic headache, unspecifiedHeader (more codes below)
- G44.31 – Acute post-traumatic headacheHeader (more codes below)
- G44.32 – Chronic post-traumatic headacheHeader (more codes below)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G44 – Other headache syndromes
Excludes1 (not coded here):
- headache NOS (R51.9)
Related codes in G44
- G44.0 – Cluster headaches and other trigeminal autonomic cephalgias (TAC)Header
- G44.1 – Vascular headache, not elsewhere classifiedBillable
- G44.2 – Tension-type headacheHeader
- G44.4 – Drug-induced headache, not elsewhere classifiedHeader
- G44.5 – Complicated headache syndromesHeader
- G44.8 – Other specified headache syndromesHeader
Frequently asked questions
What is ICD-10 code G44.3?
G44.3 is the ICD-10-CM code for post-traumatic headache, in the block G40-G47 (Episodic and paroxysmal disorders).
Is G44.3 a billable code?
No. G44.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does G44.3 belong to?
It belongs to category G44 – Other headache syndromes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.