G96.191 Perineural cyst

The ICD-10-CM code for Perineural cyst is G96.191 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G89-G99: Other disorders of the nervous system (G89-G99)

Category G96

20 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G96.191:

• Cyst (colloid) (mucous) (simple) (retention) › perineural
• Cyst (colloid) (mucous) (simple) (retention) › Tarlov
• Cyst (colloid) (mucous) (simple) (retention) › nerve root › cervical
• Cyst (colloid) (mucous) (simple) (retention) › nerve root › thoracic
• Cyst (colloid) (mucous) (simple) (retention) › nerve root › lumbar
• Cyst (colloid) (mucous) (simple) (retention) › nerve root › sacral

Inclusion Terms

• Cervical nerve root cyst
• Lumbar nerve root cyst
• Sacral nerve root cyst
• Tarlov cyst
• Thoracic nerve root cyst

U.S. Hospital Utilization

• An estimated 1,390 U.S. inpatient stays in 2023 included G96.191 among the documented diagnoses.
• 170 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)