Is G08 a billable ICD-10-CM code?

Yes. G08 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G08 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Inflammatory diseases of the central nervous system (G00-G09).

What cannot be coded together with G08?

G08 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

G08

G08 — Intracranial and intraspinal phlebitis and thrombophlebitis

Billable / specific codeICD-10-CM

G08 is a billable, specific ICD-10-CM code for intracranial and intraspinal phlebitis and thrombophlebitis. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

intracranial phlebitis and thrombophlebitis complicating nonpyogenic intraspinal phlebitis and thrombophlebitis (G95.1)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Risk adjustment

G08 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

G08 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
A56747Billing and Coding: Magnetic Resonance Angiography (MRA)
A56775Billing and Coding: Magnetic Resonance Angiography
A56805Billing and Coding: Magnetic Resonance Angiography (MRA)

How G08 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G08.

Embolism›intraspinal venous sinuses or veins
Embolism›venous sinus
Phlebitis›intracranial(venous) sinus (any)
Phlebitis›intraspinal venous sinuses and veins
Thrombophlebitis›cavernous sinus(venous)
Thrombophlebitis›cerebral(sinus) (vein)
Thrombophlebitis›intracranial venous sinus(any)
Thrombophlebitis›intraspinal venous sinuses and veins
Thrombophlebitis›lateral sinus(venous)
Thrombophlebitis›longitudinal sinus(venous)
Thrombophlebitis›sinus(intracranial)
Thrombosis, thrombotic›intraspinal venous sinuses and veins

Questions about G08

Is G08 a billable ICD-10-CM code?: Yes. G08 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G08 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Inflammatory diseases of the central nervous system (G00-G09).
What cannot be coded together with G08?: G08 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.