G51.0 — Bell's palsy
Is G51.0 billable?
Yes — G51.0 is billable for FY2027. G51.0 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. G51.0 may be submitted for encounters from October 1, 2026 through September 30, 2027.
G51.0 at a glance
| Code | G51.0 |
|---|---|
| Description | Bell's palsy |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G51.0 group to?
G51.0 sits in MDC 01 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 073Cranial and Peripheral Nerve Disorders with MCCmedical
- 074Cranial and Peripheral Nerve Disorders without MCCmedical
How is G51.0 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G51.0. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Bell's › palsy, paralysis
- Diplegia › facial (upper limbs)
- Palsy › facial
- Paralysis, paralytic › Bell's (complete) (incomplete)
- Paralysis, paralytic › facial (complete) (incomplete)
- Paralysis, paralytic › nerve › facial (complete) (incomplete)
- Paralysis, paralytic › nerve › seventh or facial (complete) (incomplete)
Inclusion terms
Alternative wording in documentation that is classified to G51.0.
- Facial palsy
Excludes1 — never code together — inherited from G50-G59
The conditions below can never be reported together with G51.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G51.0, but a patient may have both at the same time. When documentation supports it, G51.0 and the excluded code may both be reported.
- 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)
How long has G51.0 existed?
G51.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.