ICD10BillableValid for clinical use

ICD-10 Code G08: Intracranial and intraspinal phlebitis and thrombophlebitis

G08 is a billable ICD-10 diagnosis code used to classify Intracranial and intraspinal phlebitis and thrombophlebitis in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents intracranial and intraspinal phlebitis and thrombophlebitis in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G00-G09Inflammatory diseases of the central nervous system
currentG00-G09

Official coding notes

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
Excludes1 (do not code together)
  • intracranial phlebitis and thrombophlebitis complicating:
  • abortion, ectopic or molar pregnancy (O00-O07, O08.7)
  • pregnancy, childbirth and the puerperium (O22.5, O87.3)
  • nonpyogenic intracranial phlebitis and thrombophlebitis (I67.6)
Excludes2 (may code together if documented)
  • intracranial phlebitis and thrombophlebitis complicating nonpyogenic intraspinal phlebitis and thrombophlebitis (G95.1)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G08

Common synonyms

Intracranial and intraspinal phlebitis and thrombophlebitis

Frequently asked questions

Code details

CodeG08
SystemICD10
Display nameIntracranial and intraspinal phlebitis and thrombophlebitis
ChapterDiseases of the nervous system (G00-G99)
BlockInflammatory diseases of the central nervous system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Embolism(multiple) (paradoxical)Embolism(multiple) (paradoxical)Embolism(multiple) (paradoxical)Inflammation, inflamed, inflammatory(with exudation)Phlebitis(infective) (pyemic) (septic) (suppurative)Phlebitis(infective) (pyemic) (septic) (suppurative)ThrombophlebitisThrombophlebitisThrombophlebitisThrombophlebitisThrombophlebitisThrombophlebitis

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code G08 for Intracranial and intraspinal phlebitis and thrombophlebitis | HealthAssure