ICD-10-CM 2027
ICD-10 code for Pseudoarteriosus
Other specified congenital malformations of circulatory system
From the official ICD-10-CM alphabetic index entry “Pseudoarteriosus”. Page updated September 29, 2026.
About coding Pseudoarteriosus
The ICD-10-CM code for Pseudoarteriosus is Q28.8 (Other specified congenital malformations of circulatory system).
Within Q28, choose Q28.8 (Other specified congenital malformations of circulatory system) only when documentation doesn't support a more specific option: arteriovenous malformation of precerebral vessels (Q28.0), other malformations of precerebral vessels (Q28.1), arteriovenous malformation of cerebral vessels (Q28.2), other malformations of cerebral vessels (Q28.3) and congenital malformation of circulatory system, unspecified (Q28.9).
The conditions in its Excludes2 note aren't part of Q28.8, but may be coded alongside it if the patient has both: disorders of pyrophosphate metabolism (E83.82-).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about Pseudoarteriosus ICD-10 codes
What is the ICD-10 code for Pseudoarteriosus?
- Q28.8 — Other specified congenital malformations of circulatory system.
Is Q28.8 billable?
- Yes. Q28.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q28.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q28.8 as a principal diagnosis.
Is Q28.8 a CC or MCC?
- Q28.8 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.