G08 Intracranial and intraspinal phlebitis and thrombophlebitis

The ICD-10-CM code for Intracranial and intraspinal phlebitis and thrombophlebitis is G08 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

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

Section

G00-G09: Inflammatory diseases of the central nervous system (G00-G09)

Category G08

1 code (1 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G08:

• Embolism (multiple) (paradoxical) › intraspinal venous sinuses or veins
• Thrombophlebitis › longitudinal (venous) sinus
• Phlebitis (infective) (pyemic) (septic) (suppurative) › intracranial (venous) sinus (any)
• Phlebitis (infective) (pyemic) (septic) (suppurative) › intraspinal venous sinuses and veins
• Thrombophlebitis › sinus (intracranial)
• Thrombophlebitis › lateral (venous) sinus
• Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › intraspinal venous sinuses and veins
• Embolism (multiple) (paradoxical) › venous sinus

Inclusion Terms

• Septic embolism of intracranial or intraspinal venous sinuses and veins
• Septic endophlebitis of intracranial or intraspinal venous sinuses and veins
• Septic phlebitis of intracranial or intraspinal venous sinuses and veins
• Septic thrombophlebitis of intracranial or intraspinal venous sinuses and veins
• Septic thrombosis of intracranial or intraspinal venous sinuses and veins

U.S. Hospital Utilization

• An estimated 10,030 U.S. inpatient stays in 2023 included G08 among the documented diagnoses.
• 2,395 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)

Cite This Page

Reference G08 with the canonical source and edition:

G08 — Intracranial and intraspinal phlebitis and thrombophlebitis. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/G08

Canonical URL: https://icd10codingpro.com/codes/G08