G51.3 ICD-10-CM Code: Clonic hemifacial spasm
G51.3 is the authoritative medical code for Clonic hemifacial spasm. This classification is used in medical billing and clinical recording to specify the clinical criteria for clonic hemifacial spasm (ICD-10-CM G51.3), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for G51.3 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- disorders of 7th cranial nerve
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
- neuralgia NOS (M79.2)
- neuritis NOS (M79.2)
- peripheral neuritis in pregnancy (O26.82-)
- radiculitis NOS (M54.1-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Can G51.3 be billed directly?
No. G51.3 (Clonic hemifacial spasm) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with G51.3?
Per official ICD-10-CM Excludes1 instructions, G51.3 must not be reported together with: current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region; neuralgia NOS (M79.2); neuritis NOS (M79.2); peripheral neuritis in pregnancy (O26.82-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to G51.3 in its code family, with their registry titles.
- G51 — Facial nerve disorders
- G51.0 — Bell's palsy
- G51.1 — Geniculate ganglionitis
- G51.2 — Melkersson's syndrome
- G51.31 — Clonic hemifacial spasm, right
- G51.32 — Clonic hemifacial spasm, left
- G51.33 — Clonic hemifacial spasm, bilateral
- G51.39 — Clonic hemifacial spasm, unspecified
- G51.4 — Facial myokymia
- G51.8 — Other disorders of facial nerve