ICD-10-CM Code G44.89

Other headache syndrome

Version 2020 Billable Code

Valid for Submission

G44.89 is a billable code used to specify a medical diagnosis of other headache syndrome. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code G44.89 might also be used to specify conditions or terms like allergic headache, allergic migraine, anterior ethmoidal nerve syndrome, cervicogenic headache, chronic headache disorder, chronic primary headache, etc

Short Description:Other headache syndrome
Long Description:Other headache syndrome

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code G44.89 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Allergic headache
  • Allergic migraine
  • Anterior ethmoidal nerve syndrome
  • Cervicogenic headache
  • Chronic headache disorder
  • Chronic primary headache
  • Menopausal headache

Clinical Information

  • CLUSTER HEADACHE-. a primary headache disorder that is characterized by severe strictly unilateral pain which is orbital supraorbital temporal or in any combination of these sites lasting 15 180 min. occurring 1 to 8 times a day. the attacks are associated with one or more of the following all of which are ipsilateral: conjunctival injection lacrimation nasal congestion rhinorrhea facial sweating eyelid edema and miosis. international classification of headache disorders 2nd ed. cephalalgia 2004: suppl 1
  • HEADACHE DISORDERS-. various conditions with the symptom of headache. headache disorders are classified into major groups such as primary headache disorders based on characteristics of their headache symptoms and secondary headache disorders based on their etiologies. international classification of headache disorders 2nd ed. cephalalgia 2004: suppl 1
  • HEADACHE DISORDERS PRIMARY-. conditions in which the primary symptom is headache and the headache cannot be attributed to any known causes.

Diagnostic Related Groups

The ICD-10 code G44.89 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert G44.89 to ICD-9

  • 339.89 - Headache syndrome NEC

Code Classification

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

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Peripheral Nerve Disorders

Your peripheral nerves are the ones outside your brain and spinal cord. Like static on a telephone line, peripheral nerve disorders distort or interrupt the messages between the brain and the rest of the body.

There are more than 100 kinds of peripheral nerve disorders. They can affect one nerve or many nerves. Some are the result of other diseases, like diabetic nerve problems. Others, like Guillain-Barre syndrome, happen after a virus infection. Still others are from nerve compression, like carpal tunnel syndrome or thoracic outlet syndrome. In some cases, like complex regional pain syndrome and brachial plexus injuries, the problem begins after an injury. Some people are born with peripheral nerve disorders.

Symptoms often start gradually, and then get worse. They include

  • Numbness
  • Pain
  • Burning or tingling
  • Muscle weakness
  • Sensitivity to touch

Treatment aims to treat any underlying problem, reduce pain and control symptoms.

NIH: National Institute of Neurological Disorders and Stroke

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