I63.6 vs I67.6
I63.6 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.
The official note, declared on I67.6
nonpyogenic thrombosis of intracranial venous system causing infarction (I63.6)
I63.6
Cerebral infarction due to cerebral venous thrombosis, nonpyogenic
Billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I60-I69
Indexed under
- Infarct, infarction › cerebral › due to › cerebral venous thrombosis, nonpyogenic
I67.6
Nonpyogenic thrombosis of intracranial venous system
Billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I60-I69
Use when the record says
- Nonpyogenic thrombosis of cerebral vein
- Nonpyogenic thrombosis of intracranial venous sinus
Indexed under
- Phlebitis › intracranial › nonpyogenic (infective) (pyemic) (septic) (suppurative)
- Thrombophlebitis › cavernoussinus › nonpyogenic
- Thrombophlebitis › cerebral › nonpyogenic
- Thrombophlebitis › intracranial venous sinus › nonpyogenic
- Thrombophlebitis › lateralsinus › nonpyogenic
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