2027 ICD-10-CM Diagnosis Code I67.6Nonpyogenic thrombosis of intracranial venous system
ICD-10-CM Codes›I00–I99›I60-I69›I67
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
I67.6 is a billable ICD-10-CM diagnosis code for nonpyogenic thrombosis of intracranial venous system. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 62 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other and ill-defined cerebrovascular disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Benign intracranial hypertension
- Benign intracranial hypertension due to thrombus of intracranial vein
- Cerebral vein occlusion
- Cerebral venous thrombosis of cortical vein
- Cerebral venous thrombosis of cortical vein without infarction
- Cerebral venous thrombosis of great cerebral vein
- Cerebral venous thrombosis of straight sinus
- Embolism of intracranial venous sinus
- Embolism of superior sagittal sinus
- Embolism of torcular Herophili
- Nonpyogenic thrombosis of intracranial venous sinus
- Occlusion of cerebral vein by nonpyogenic thrombus
- Rolandic vein occlusion syndrome
- Thrombosis of basal vein
- Thrombosis of cerebral veins
- Thrombosis of multiple cerebral veins
- Thrombosis of superior anastomotic vein
- Thrombosis of torcular Herophili
- Thrombus of intracranial vein
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I67.6: its own notes plus those printed at I67, block I60-I69, and Chapter 9. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Nonpyogenic thrombosis of cerebral vein
- Nonpyogenic thrombosis of intracranial venous sinus
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- nonpyogenic thrombosis of intracranial venous system causing infarction (I63.6)
- traumatic intracranial hemorrhage (S06.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- sequelae of the listed conditions (I69.8)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name I67.6, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming I67.6: they are not reported together with it, unless the two conditions are unrelated.
- G08 Intracranial and intraspinal phlebitis and thrombophlebitisnonpyogenic intracranial phlebitis and thrombophlebitis (I67.6)
Excludes2 2
These codes carry an Excludes2 note naming I67.6: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Embolism (multiple) (paradoxical) I74.9
intracranial See Also: Occlusion, artery, cerebral;
nonpyogenic I67.6
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Ischemic Stroke
A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they need from blood, and they start to die within a few minutes. This can cause lasting brain damage, long-term disability, or even death.
The full article covers:
- What is an ischemic stroke?
- What causes an ischemic stroke?
- What are the symptoms of ischemic stroke?
- How is an ischemic stroke diagnosed?
- How is an ischemic stroke treated?
- Can an ischemic stroke be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I67.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I67.6Overview
What is the ICD-10 code for nonpyogenic thrombosis of intracranial venous system?
The ICD-10-CM code for nonpyogenic thrombosis of intracranial venous system is I67.6 (sometimes written as I676). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I67.6 (Other cerebrovascular diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report nonpyogenic thrombosis of intracranial venous system on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I67.6 group to?
When nonpyogenic thrombosis of intracranial venous system is the principal diagnosis on an inpatient stay, it groups to MS-DRG 91, 92, 93, with relative weights from 0.7783 to 1.7050 depending on complications. Higher weights mean higher Medicare reimbursement.
Is I67.6 a CC or MCC?
CMS lists I67.6 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 62 closely related codes in its exclusion list.
Can I67.6 be reported with I63.6?
Not as a rule. The Excludes1 note on I67.6 lists "nonpyogenic thrombosis of intracranial venous system causing infarction (I63.6)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
