ICD-10-CM 2027
ICD-10 code for Leptomeningopathy
From the official ICD-10-CM alphabetic index entry “Leptomeningopathy”. Page updated September 29, 2026.
About coding Leptomeningopathy
The ICD-10-CM code for Leptomeningopathy is G96.198 (Other disorders of meninges, not elsewhere classified).
Within G96.19, choose G96.198 (Other disorders of meninges, not elsewhere classified) only when documentation doesn't support a more specific option: Perineural cyst (G96.191).
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 Leptomeningopathy ICD-10 codes
What is the ICD-10 code for Leptomeningopathy?
- G96.198 — Other disorders of meninges, not elsewhere classified.
Is G96.198 billable?
- Yes. G96.198 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G96.198 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G96.198 as a principal diagnosis.
Is G96.198 a CC or MCC?
- No. G96.198 is neither a CC nor an MCC under MS-DRG v44.0.