ICD-10-CM G44: Other headache syndromes

ICD-10-CM Diagnosis Code (2025)

Official Description for G44

Other headache syndromes

Coding Notes & Guidelines for G44

Excludes1: Not Coded Here

headache NOS (R51.9)

Excludes2: Not Included Here
  • atypical facial pain (G50.1)
  • headache due to lumbar puncture (G97.1)
  • migraines (G43.-)
  • trigeminal neuralgia (G50.0)
Excludes2: Not Included Here
  • cluster headache (G44.0)
  • complicated headache syndromes (G44.5-)
  • drug-induced headache (G44.4-)
  • migraine (G43.-)
  • other specified headache syndromes (G44.8-)
  • post-traumatic headache (G44.3-)
  • tension-type headache (G44.2-)
Excludes2: Not Included Here

headache with orthostatic or positional component, not elsewhere classified (R51.0)

Use Additional Code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Inclusion Terms
  • Ciliary neuralgia
  • Cluster headache NOS
  • Histamine cephalgia
  • Lower half migraine
  • Migrainous neuralgia
Inclusion Terms

Cluster headache syndrome NOS

Inclusion Terms

Episodic cluster headache NOS

Inclusion Terms

Chronic cluster headache NOS

Inclusion Terms

Paroxysmal hemicrania NOS

Inclusion Terms

Episodic paroxysmal hemicrania NOS

Inclusion Terms

Chronic paroxysmal hemicrania NOS

Inclusion Terms

Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) NOS

Inclusion Terms

Tension headache NOS

Inclusion Terms

Episodic tension-type headache NOS

Inclusion Terms

Chronic tension-type headache NOS

Inclusion Terms

Post-traumatic headache NOS

Inclusion Terms

Acute post-traumatic headache NOS

Inclusion Terms

Chronic post-traumatic headache NOS

Inclusion Terms

Medication overuse headache

Inclusion Terms
  • Orgasmic headache
  • Preorgasmic headache
Code Also

associated cervical spinal condition, if known

Child Codes (More Specific Codes for G44):

G44.0 - Cluster headaches and other trigeminal autonomic cephalgias (TAC) G44.00 - Cluster headache syndrome, unspecified G44.001 - Cluster headache syndrome, unspecified, intractable G44.009 - Cluster headache syndrome, unspecified, not intractable G44.01 - Episodic cluster headache G44.011 - Episodic cluster headache, intractable G44.019 - Episodic cluster headache, not intractable G44.02 - Chronic cluster headache G44.021 - Chronic cluster headache, intractable G44.029 - Chronic cluster headache, not intractable G44.03 - Episodic paroxysmal hemicrania G44.031 - Episodic paroxysmal hemicrania, intractable G44.039 - Episodic paroxysmal hemicrania, not intractable G44.04 - Chronic paroxysmal hemicrania G44.041 - Chronic paroxysmal hemicrania, intractable G44.049 - Chronic paroxysmal hemicrania, not intractable G44.05 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) G44.051 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable G44.059 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable G44.09 - Other trigeminal autonomic cephalgias (TAC) G44.091 - Other trigeminal autonomic cephalgias (TAC), intractable G44.099 - Other trigeminal autonomic cephalgias (TAC), not intractable G44.1 - Vascular headache, not elsewhere classified G44.2 - Tension-type headache G44.20 - Tension-type headache, unspecified G44.201 - Tension-type headache, unspecified, intractable G44.209 - Tension-type headache, unspecified, not intractable G44.21 - Episodic tension-type headache G44.211 - Episodic tension-type headache, intractable G44.219 - Episodic tension-type headache, not intractable G44.22 - Chronic tension-type headache G44.221 - Chronic tension-type headache, intractable G44.229 - Chronic tension-type headache, not intractable G44.3 - Post-traumatic headache G44.30 - Post-traumatic headache, unspecified G44.301 - Post-traumatic headache, unspecified, intractable G44.309 - Post-traumatic headache, unspecified, not intractable G44.31 - Acute post-traumatic headache G44.311 - Acute post-traumatic headache, intractable G44.319 - Acute post-traumatic headache, not intractable G44.32 - Chronic post-traumatic headache G44.321 - Chronic post-traumatic headache, intractable G44.329 - Chronic post-traumatic headache, not intractable G44.4 - Drug-induced headache, not elsewhere classified G44.40 - Drug-induced headache, not elsewhere classified, not intractable G44.41 - Drug-induced headache, not elsewhere classified, intractable G44.5 - Complicated headache syndromes G44.51 - Hemicrania continua G44.52 - New daily persistent headache (NDPH) G44.53 - Primary thunderclap headache G44.59 - Other complicated headache syndrome G44.8 - Other specified headache syndromes G44.81 - Hypnic headache G44.82 - Headache associated with sexual activity G44.83 - Primary cough headache G44.84 - Primary exertional headache G44.85 - Primary stabbing headache G44.86 - Cervicogenic headache G44.89 - Other headache syndrome

About ICD-10-CM Code G44 (Other headache syndromes)

ICD-10-CM code G44 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G44 became effective on October 1, 2024.

This page provides detailed information about G44 - Other headache syndromes. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other headache syndromes.