E71.121

HCC Category Mapping

What This Code Means

A rare inherited metabolic disorder where the body cannot properly break down propionic acid, causing its accumulation and potentially affecting the nervous system, heart, and blood.

Coding Tips

• •Ensure documentation clearly indicates propionic acidemia rather than other organic acidemias
• •Note any acute exacerbations or complications for complete coding

Clinical Significance

Propionic acidemia results from deficiency of propionyl-CoA carboxylase, causing accumulation of propionic acid and its metabolites with risk of severe metabolic acidosis, hyperammonemia, and cardiomyopathy. Patients are vulnerable to metabolic crises during illness, surgery, or fasting, which can be life-threatening. Long-term complications include intellectual disability, movement disorders, and dilated cardiomyopathy.

Documentation Requirements

• ✓Document plasma propionylcarnitine levels, urine organic acid results, ammonia levels, cardiac function assessments, neurological status, and genetic testing results.
• ✓Record dietary protein restriction protocols, carnitine supplementation, and frequency of metabolic decompensation episodes.

Commonly Confused Codes