E71.50

HCC Category Mapping

What This Code Means

A rare genetic disorder affecting how the body processes certain fatty acids and other substances in cellular structures called peroxisomes, with unspecified type.

Coding Tips

• •Use this code only when the specific type of peroxisomal disorder cannot be determined; investigate further for more specific diagnosis codes
• •Document any clinical manifestations (neurological, developmental, or metabolic symptoms) to support diagnosis specificity

Clinical Significance

Unspecified peroxisomal disorder indicates a condition affecting peroxisome function where the specific type has not been determined, encompassing potential defects in peroxisome biogenesis, fatty acid oxidation, or plasmalogen synthesis. Peroxisomal disorders can cause severe neurological, hepatic, and skeletal abnormalities. Definitive diagnosis through specialized biochemical and genetic testing is critical for prognosis and genetic counseling.

Documentation Requirements

• ✓Document clinical findings suggesting peroxisomal dysfunction (neurological regression, hepatomegaly, skeletal abnormalities), very long chain fatty acid levels, plasmalogen levels, and status of diagnostic workup.
• ✓Record reason for unspecified status and any pending genetic testing.

Commonly Confused Codes