ICD-10-CM > Q00-QA0 > Q20-Q28 > Q28 > Q28.8 Q28.8 Other specified congenital malformations of circulatory system Billable/Specific Copy Code Copy Description Applicable To Congenital aneurysm, specified site NECSpinal vessel anomaly Type 2 Excludes disorders of pyrophosphate metabolism (E83.82-)