Q00.0

HCC Category Mapping

What This Code Means

A severe birth defect where most or all of the brain and scalp fail to develop, resulting in a mostly absent brain.

Coding Tips

• •This is a congenital condition diagnosed prenatally or at birth; document whether diagnosed prenatally or postnatally
• •Often incompatible with life; verify if this is the primary diagnosis or secondary to other conditions

Clinical Significance

Anencephaly represents one of the most severe neural tube defects incompatible with life, where most of the brain and skull fail to develop. This diagnosis carries extremely poor prognosis with most affected infants dying within hours to days after birth, requiring palliative care and family support.

Documentation Requirements

• ✓Clear documentation of anencephaly diagnosis
• ✓Prenatal imaging findings if available
• ✓Physical examination confirming absent brain tissue and skull
• ✓Associated anomalies documented
• ✓Genetic counseling provided to family
• ✓Palliative care plans established
• ✓Family support and bereavement counseling
• ✓Autopsy findings if performed

Commonly Confused Codes