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  6. 2026 ICD-10-CM Code G44

2026 ICD-10-CM Diagnosis Code G44

Other headache syndromes

ICD-10-CM Code:
G44
ICD-10 Code for:
Other headache syndromes
Is Billable?
Not Valid for Submission
Code Navigator:

G44 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of other headache syndromes. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Other headache syndromes

Non-specific codes like G44 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for other headache syndromes:

  • G44.0 for Cluster headaches and other trigeminal autonomic cephalgias (TAC)

  • G44.00 for Cluster headache syndrome, unspecified

  • G44.01 for Episodic cluster headache

  • G44.02 for Chronic cluster headache

  • G44.03 for Episodic paroxysmal hemicrania

  • G44.04 for Chronic paroxysmal hemicrania

  • G44.05 for Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)

  • G44.09 for Other trigeminal autonomic cephalgias (TAC)

  • Use G44.1 for Vascular headache, not elsewhere classified

  • G44.2 for Tension-type headache

  • G44.20 for Tension-type headache, unspecified

  • G44.21 for Episodic tension-type headache

  • G44.22 for Chronic tension-type headache

  • G44.3 for Post-traumatic headache

  • G44.30 for Post-traumatic headache, unspecified

  • G44.31 for Acute post-traumatic headache

  • G44.32 for Chronic post-traumatic headache

  • G44.4 for Drug-induced headache, not elsewhere classified

  • Use G44.40 for Drug-induced headache, not elsewhere classified, not intractable

  • Use G44.41 for Drug-induced headache, not elsewhere classified, intractable

  • G44.5 for Complicated headache syndromes

  • Use G44.51 for Hemicrania continua

  • Use G44.52 for New daily persistent headache (NDPH)

  • Use G44.53 for Primary thunderclap headache

  • Use G44.59 for Other complicated headache syndrome

  • G44.8 for Other specified headache syndromes

  • Use G44.81 for Hypnic headache

  • Use G44.82 for Headache associated with sexual activity

  • Use G44.83 for Primary cough headache

  • Use G44.84 for Primary exertional headache

  • Use G44.85 for Primary stabbing headache

  • Use G44.86 for Cervicogenic headache

  • Use G44.89 for Other headache syndrome

Code Classification

  • Diseases of the nervous system
    G00–G99
    • Episodic and paroxysmal disorders
      G40-G47
      • Other headache syndromes
        G44

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • atypical facial pain G50.1
  • headache due to lumbar puncture G97.1
  • migraines G43
  • trigeminal neuralgia G50.0

Patient Education


Headache

Almost everyone has had a headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor.

The most common type of headache is a tension headache. Tension headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related to stress, depression or anxiety. You are more likely to get tension headaches if you work too much, don't get enough sleep, miss meals, or use alcohol.

Other common types of headaches include migraines, cluster headaches, and sinus headaches. Most people can feel much better by making lifestyle changes, learning ways to relax and taking pain relievers.

Not all headaches require a doctor's attention. But sometimes headaches warn of a more serious disorder. Let your health care provider know if you have sudden, severe headaches. Get medical help right away if you have a headache after a blow to your head, or if you have a headache along with a stiff neck, fever, confusion, loss of consciousness, or pain in the eye or ear.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.