2021 ICD-10-CM Diagnosis Code G44.32

Chronic post-traumatic headache

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • G44.32 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM G44.32 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of G44.32 - other international versions of ICD-10 G44.32 may differ.
The following code(s) above G44.32 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 G44.32:
  • G00-G99
    2021 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 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)
    Diseases of the nervous system
  • G44
    ICD-10-CM Diagnosis Code G44

    Other headache syndromes

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    • atypical facial pain (G50.1)
    • headache due to lumbar puncture (G97.1)
    • migraines (G43.-)
    • trigeminal neuralgia (G50.0)
    Other headache syndromes
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
ICD-10-CM Codes Adjacent To G44.32
G44.22 Chronic tension-type headache
G44.221 …… intractable
G44.229 …… not intractable
G44.3 Post-traumatic headache
G44.30 Post-traumatic headache, unspecified
G44.301 …… intractable
G44.309 …… not intractable
G44.31 Acute post-traumatic headache
G44.311 …… intractable
G44.319 …… not intractable
G44.32 Chronic post-traumatic headache
G44.321 …… intractable
G44.329 …… not intractable
G44.4 Drug-induced headache, not elsewhere classified
G44.40 …… not intractable
G44.41 …… 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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.