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    v1.0.28
    OpenPayerBilling CodesEpisodic and paroxysmal disordersICD-10-CM g44-other-headache-syndromes
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    ICD-10-CM Code For Other Headache Syndromes: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G44 includes diagnoses for miscellaneous headache disorders such as tension-type headaches, cluster headache variants, and other specified or unspecified headache syndromes that are not classified elsewhere. These ICD-10-CM diagnosis codes are used to document clinical presentations of recurrent or acute cranial pain, capturing features like frequency, duration, and impact on function relevant to this group. Accurate coding within the ICD-10-CM G44 group supports proper claim adjudication and complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM G44: Other Headache Syndromes Overview

    The ICD-10-CM G44 group covers a range of primary and secondary headache disorders that do not fall into more specific migraine or trigeminal autonomic cephalalgia categories. These conditions target the nervous system and cranial pain syndromes and can affect function and quality of life. Accurate coding ensures clinical documentation reflects the diagnosis and supports appropriate reimbursement and claim processing.

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    When to Use

    Use a code from this group when a patient presents with a headache disorder that matches the clinical descriptions within the G44 codes and does not belong to another, more specific headache category. These codes apply when documentation indicates the type of headache (specified versus unspecified), frequency, or other distinguishing clinical features relevant to billing and medical records.

    ICD-10-CM Codes

    40 rows

    ICD-10-CM CodeDescription
    G44.001Cluster headache syndrome, unspecified, intractable
    G44.009Cluster headache syndrome, unspecified, not intractable
    G44.011Episodic cluster headache, intractable
    G44.019Episodic cluster headache, not intractable
    G44.021Chronic cluster headache, intractable
    G44.029Chronic cluster headache, not intractable
    G44.031Episodic paroxysmal hemicrania, intractable
    G44.039Episodic paroxysmal hemicrania, not intractable
    G44.041Chronic paroxysmal hemicrania, intractable
    G44.049Chronic paroxysmal hemicrania, not intractable
    G44.051Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable
    G44.059Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable
    G44.091Other trigeminal autonomic cephalgias (TAC), intractable
    G44.099Other trigeminal autonomic cephalgias (TAC), not intractable
    G44.1Vascular headache, not elsewhere classified
    G44.201Tension-type headache, unspecified, intractable
    G44.209Tension-type headache, unspecified, not intractable
    G44.211Episodic tension-type headache, intractable
    G44.219Episodic tension-type headache, not intractable
    G44.221Chronic tension-type headache, intractable

    Showing 1–20 of 40

    DRG Codes

    2 rows

    DRG CodeDescription
    102Headaches with MCC
    103Headaches without MCC

    Typical Clinical Scenarios

    • A middle‑aged patient presents to urgent care with sudden onset unilateral, severe, stabbing head pain episodes lasting minutes to hours, occurring multiple times per day with associated restlessness but no focal neurologic deficits. The clinician documents a paroxysmal trigeminal distribution headache and prescribes short‑acting therapy for acute attacks; a code from this group is assigned to classify an acute paroxysmal neuralgiform headache disorder. Typical codes: G44.011, G44.019
    • An adult with a multi‑year history of recurrent migraine‑like headaches reports increasing frequency and transformation to chronic daily headaches despite preventive therapy; outpatient neurology documents chronic, recurrent episodic headache disorder requiring adjustment of long‑term management. Because this is an ongoing episodic or chronic paroxysmal headache syndrome being followed in clinic, a chronic episodic/paroxysmal code from the group is used to capture the persistent nature of the condition. Typical codes: G44.201, G44.209
    • An elderly inpatient is admitted after a fall; history reveals persistent occipital and suboccipital stabbing headaches attributed to occipital neuralgia following cervical spine surgery, complicating rehabilitation and pain control. The treating team codes the secondary neuralgiform headache disorder to document the complication of prior cervical procedure and guide inpatient pain management and discharge planning. Typical codes: G44.321, G44.329

    Related Codes

    G40-EPILEPSY-AND-RECURRENT-SEIZURES

    ICD-10-CM Code For Epilepsy And Recurrent Seizures: Group Overview

    G43-MIGRAINE-DISORDERS

    ICD-10-CM Code For Migraine: Group Overview

    G45-TRANSIENT-CEREBRAL-ISCHEMIC-ATTACKS

    ICD-10-CM Code For Transient Cerebral Ischemic Attacks And Related Syndromes: Group Overview

    G46-VASCULAR-SYNDROMES-OF-BRAIN

    ICD-10-CM Code For Vascular Syndromes Of Brain In Cerebrovascular Diseases: Group Overview

    G47-SLEEP-DISORDERS

    ICD-10-CM Code For Sleep Disorders: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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