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ICD-10-CM Codes
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G00-G99
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G40-G47
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G44-
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2023 ICD-10-CM Diagnosis Code G44.001
2023 ICD-10-CM Diagnosis Code G44.001
Cluster headache syndrome, unspecified, intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- G44.001 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM G44.001 became effective on October 1, 2022.
- This is the American ICD-10-CM version of G44.001 - other international versions of ICD-10 G44.001 may differ.
The following code(s) above
G44.001 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
G44.001:
- G00-G99
2023 ICD-10-CM Range G00-G99
Diseases of the nervous systemType 2 Excludes- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- G44
ICD-10-CM Diagnosis Code G44
Other headache syndromes
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 2 Excludes- atypical facial pain (G50.1)
- headache due to lumbar puncture (G97.1)
- migraines (G43.-)
- trigeminal neuralgia (G50.0)
- G44.00
ICD-10-CM Diagnosis Code G44.00
Cluster headache syndrome, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Applicable To- Ciliary neuralgia
- Cluster headache NOS
- Histamine cephalgia
- Lower half migraine
- Migrainous neuralgia
- Cluster headache, intractable
- Intractable cluster headache
ICD-10-CM G44.001 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 102 Headaches with mcc
- 103 Headaches without mcc
Convert G44.001 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Cephalgia, cephalalgia - see also Headache
- histamine G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
- Headache R51.9
ICD-10-CM Diagnosis Code R51.9
Headache, unspecified
2021 - New Code 2022 2023 Billable/Specific Code
- cluster G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
- histamine G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
- Neuralgia, neuralgic (acute) M79.2
ICD-10-CM Diagnosis Code M79.2
Neuralgia and neuritis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- ciliary G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
- migrainous G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
- Syndrome - see also Disease
- cluster headache G44.009
ICD-10-CM Diagnosis Code G44.009
Cluster headache syndrome, unspecified, not intractable
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Cluster headache syndrome NOS
ICD-10-CM Codes Adjacent To G44.001
G43.9 Migraine, unspecified
G43.90 Migraine, unspecified, not intractable
G43.909 …… without status migrainosus
G43.91 Migraine, unspecified, intractable
G43.919 …… without status migrainosus
G44 Other headache syndromes
G44.0 Cluster headaches and other trigeminal autonomic cephalgias (TAC)
G44.00 Cluster headache syndrome, unspecified
G44.001
…… intractable
G44.01 Episodic cluster headache
G44.02 Chronic cluster headache
G44.03 Episodic paroxysmal hemicrania
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
