ICD-10 code for Embryonic circulation

The ICD-10-CM code for Embryonic circulation is Q28.9 (Congenital malformation of circulatory system, unspecified).

Within Q28, choose Q28.9 (Congenital malformation of circulatory system, unspecified) 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 other specified congenital malformations of circulatory system (Q28.8).

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.

In MS-DRG v44.0, it is part of the grouping logic for DRG 299 (Peripheral Vascular Disorders with MCC, relative weight 1.5842), DRG 300 (Peripheral Vascular Disorders with CC, relative weight 1.0464) and DRG 301 (Peripheral Vascular Disorders without CC/MCC, relative weight 0.7133), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.