ICD10BillableValid for clinical use

ICD-10 Code G44.309: Post-traumatic headache, unspecified, not intractable

G44.309 is a billable ICD-10 diagnosis code used to classify Post-traumatic headache, unspecified, not intractable in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents post-traumatic headache, unspecified, not intractable in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G40-G47Episodic and paroxysmal disorders
category
G44Other headache syndromes
category
G44.3Post-traumatic headache
category
G44.30Post-traumatic headache, unspecified
currentG44.30

Official coding notes

Inclusion terms
  • Post-traumatic headache NOS

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral PhysicianOrthopedic Specialist

Coding guidelines

Common synonyms

Post-traumatic headache, unspecified, not intractablePost-traumatic headache, unspecified

Frequently asked questions

Code details

CodeG44.309
SystemICD10
Display namePost-traumatic headache, unspecified, not intractable
ChapterDiseases of the nervous system (G00-G99)
BlockEpisodic and paroxysmal disorders

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
HeadacheHeadache

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code G44.309 for Post-traumatic headache, unspecified, not intractable | HealthAssure