ICD-10-CM 2027
ICD-10 code for paroxysmal facial pain syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › paroxysmal facial pain”. Page updated September 29, 2026.
About coding paroxysmal facial pain syndrome
The ICD-10-CM code for paroxysmal facial pain syndrome is G50.0 (Trigeminal neuralgia).
Within G50 (disorders of trigeminal nerve), G50.0 is specifically for trigeminal neuralgia. Related codes cover atypical facial pain (G50.1), other disorders of trigeminal nerve (G50.8) and disorder of trigeminal nerve, unspecified (G50.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 073 (Cranial and Peripheral Nerve Disorders with MCC, relative weight 1.5779) and DRG 074 (Cranial and Peripheral Nerve Disorders without MCC, relative weight 1.0173), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about paroxysmal facial pain syndrome ICD-10 codes
What is the ICD-10 code for paroxysmal facial pain syndrome?
- G50.0 — Trigeminal neuralgia.
Is G50.0 billable?
- Yes. G50.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G50.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G50.0 as a principal diagnosis.
Is G50.0 a CC or MCC?
- No. G50.0 is neither a CC nor an MCC under MS-DRG v44.0.