2022 ICD-10-CM Code G44

Other headache syndromes

Version 2021

Not Valid for Submission

Short Description:Other headache syndromes
Long Description:Other headache syndromes

Code Classification

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

G44 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other headache syndromes. The code is not specific and is NOT valid for the year 2022 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 for Other headache syndromes

Non-specific codes like G44 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for other headache syndromes:

  • NON-BILLABLE CODE - G44.0 for Cluster headaches and other trigeminal autonomic cephalgias (TAC)
  • NON-BILLABLE CODE - G44.00 for Cluster headache syndrome, unspecified
  • NON-BILLABLE CODE - G44.01 for Episodic cluster headache
  • NON-BILLABLE CODE - G44.02 for Chronic cluster headache
  • NON-BILLABLE CODE - G44.03 for Episodic paroxysmal hemicrania
  • NON-BILLABLE CODE - G44.04 for Chronic paroxysmal hemicrania
  • NON-BILLABLE CODE - G44.05 for Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)
  • NON-BILLABLE CODE - G44.09 for Other trigeminal autonomic cephalgias (TAC)
  • BILLABLE CODE - Use G44.1 for Vascular headache, not elsewhere classified
  • NON-BILLABLE CODE - G44.2 for Tension-type headache
  • NON-BILLABLE CODE - G44.20 for Tension-type headache, unspecified
  • NON-BILLABLE CODE - G44.21 for Episodic tension-type headache
  • NON-BILLABLE CODE - G44.22 for Chronic tension-type headache
  • NON-BILLABLE CODE - G44.3 for Post-traumatic headache
  • NON-BILLABLE CODE - G44.30 for Post-traumatic headache, unspecified
  • NON-BILLABLE CODE - G44.31 for Acute post-traumatic headache
  • NON-BILLABLE CODE - G44.32 for Chronic post-traumatic headache
  • NON-BILLABLE CODE - G44.4 for Drug-induced headache, not elsewhere classified
  • BILLABLE CODE - Use G44.40 for Drug-induced headache, not elsewhere classified, not intractable
  • BILLABLE CODE - Use G44.41 for Drug-induced headache, not elsewhere classified, intractable
  • NON-BILLABLE CODE - G44.5 for Complicated headache syndromes
  • BILLABLE CODE - Use G44.51 for Hemicrania continua
  • BILLABLE CODE - Use G44.52 for New daily persistent headache (NDPH)
  • BILLABLE CODE - Use G44.53 for Primary thunderclap headache
  • BILLABLE CODE - Use G44.59 for Other complicated headache syndrome
  • NON-BILLABLE CODE - G44.8 for Other specified headache syndromes
  • BILLABLE CODE - Use G44.81 for Hypnic headache
  • BILLABLE CODE - Use G44.82 for Headache associated with sexual activity
  • BILLABLE CODE - Use G44.83 for Primary cough headache
  • BILLABLE CODE - Use G44.84 for Primary exertional headache
  • BILLABLE CODE - Use G44.85 for Primary stabbing headache
  • BILLABLE CODE - Use G44.86 for Cervicogenic headache
  • BILLABLE CODE - Use G44.89 for Other headache syndrome

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G44:

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.

Clinical Information

Information for Patients


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 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 (First year ICD-10-CM implemented into the HIPAA code set)