G44.099
G44.099: Other trigeminal autonomic cephalgias (TAC), not intractable
Billable / specific codeICD-10-CM
G44.099 is a billable, specific ICD-10-CM code for other trigeminal autonomic cephalgias (tac), not intractable. It is valid for submission on a claim.
Check G44.099 with the rest of the claim: free scrubberExcludes1 inherited from the categories above G44.099
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above G44.099
Not part of this code, but both may be coded when both are present.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
G44.099 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
Alphabetic index entries that lead here
- Horton's headache or neuralgia
- TAC NEC(trigeminal autonomic cephalgia)
- Cephalgia, cephalalgia›trigeminal autonomic NEC(TAC)
- Horton's headache or neuralgia›not intractable
- Neuralgia, neuralgic›Horton's
- TAC NEC›not intractable
- Cephalgia, cephalalgia›trigeminal autonomic NEC›not intractable
- Neuralgia, neuralgic›Horton's›not intractable
Code history
Unchanged in every release from FY2024 to FY2027.