G08 vs I67.6
G08 and I67.6 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
Intracranial and intraspinal phlebitis and thrombophlebitis
- Chapter 6
- Diseases of the nervous system
- Section
- G00-G09
- 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
- Embolism › intraspinal venous sinuses or veins (multiple) (paradoxical)
- Embolism › venous sinus (multiple) (paradoxical)
- Phlebitis › intracranial (infective) (pyemic) (septic) (suppurative)
- Phlebitis › intraspinal venous sinuses and veins (infective) (pyemic) (septic) (suppurative)
- Thrombophlebitis › cavernoussinus
Nonpyogenic thrombosis of intracranial venous system
- Chapter 9
- Diseases of the circulatory system
- Section
- I60-I69
- Nonpyogenic thrombosis of cerebral vein
- Nonpyogenic thrombosis of intracranial venous sinus
- Phlebitis › intracranial › nonpyogenic (infective) (pyemic) (septic) (suppurative)
- Thrombophlebitis › cavernoussinus › nonpyogenic
- Thrombophlebitis › cerebral › nonpyogenic
- Thrombophlebitis › intracranial venous sinus › nonpyogenic
- Thrombophlebitis › lateralsinus › nonpyogenic
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027