G44.091
Billable
ChapterG00–G99
Ranksubcategory
Official Description
Other trigeminal autonomic cephalgias (TAC), intractable
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Billable/specific code (valid for reimbursement).
- •Chapter 6: Diseases of the Nervous System (G00-G99).
General instructions are available for the parent sections:
Clinical Hierarchy
CH6Diseases of the nervous system (G00-G99)
G40-G47Episodic and paroxysmal disorders (G40-G47)
G44Other headache syndromes
G44.0Cluster headaches and other trigeminal autonomic cephalgias (TAC)
G44.09Other trigeminal autonomic cephalgias (TAC)
G44.091Other trigeminal autonomic cephalgias (TAC), intractable
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to G44.091:
Alphabetic Index Mentions
These are Diagnosis Index lookup paths that route to G44.091. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.
4 raw paths
Horton's headache or neuralgia1 unique routes
Neuralgia, neuralgic (acute)1 unique routes
TAC (trigeminal autonomic cephalgia) NEC1 unique routes
MS-DRG Classification
This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:
Cross Reference
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