ICD-10-CM 2027
ICD-10 code for Perineural cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › perineural”. Page updated September 29, 2026.
About coding Perineural cyst
The ICD-10-CM code for Perineural cyst is G96.191 (Perineural cyst).
Within G96.19 (other disorders of meninges, not elsewhere classified), G96.191 is specifically for Perineural cyst. Related codes cover other disorders of meninges, not elsewhere classified (G96.198).
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 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), 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 Perineural cyst ICD-10 codes
What is the ICD-10 code for Perineural cyst?
- G96.191 — Perineural cyst.
Is G96.191 billable?
- Yes. G96.191 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G96.191 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G96.191 as a principal diagnosis.
Is G96.191 a CC or MCC?
- No. G96.191 is neither a CC nor an MCC under MS-DRG v44.0.