ICD-10 Code E71.43 – Iatrogenic carnitine deficiency (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E71.43 – Iatrogenic carnitine deficiency
What it is
Iatrogenic carnitine deficiency means a low carnitine state caused by medical treatment or another healthcare-related factor. Use this code when the deficiency is documented as treatment-related and not a primary inherited disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly described findings include muscle weakness, fatigue, and possible metabolic complications consistent with low carnitine.
When to use this code
Use E71.43 when the record states that carnitine deficiency was caused by therapy, medication exposure, or another iatrogenic reason. It may also apply when the clinician documents “iatrogenic” or “acquired due to treatment.”
Code only when the documentation clearly links the deficiency to a medical intervention. If the cause is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for hereditary carnitine metabolism disorders or unspecified carnitine deficiency. If the chart does not identify a treatment-related cause, check documentation.
Coding tip
Look for explicit wording that connects the deficiency to treatment; without that link, the diagnosis may need a different code.