ICD-10-CM E70.0 is the diagnosis code for Classical phenylketonuria. This code falls under the section "Metabolic disorders" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where E70.0 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, E70.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
E70.0 is the ICD-10-CM diagnosis code for "Classical phenylketonuria". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of E70.0 is E70 ("Disorders of aromatic amino-acid metabolism"). E70.0 provides a more specific classification within this category.
E70.0 is located in Section E70-E88 — "Metabolic disorders" within Chapter 4 of the ICD-10-CM Tabular List.
Use E70.0 when the patients documented diagnosis matches "Classical phenylketonuria" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Classical phenylketonuria is E70.0.
Yes, E70.0 can be used as a primary diagnosis code since it is billable and specific.
E70.0 is in Chapter 4 of the ICD-10-CM Tabular List.
Yes, E70.0 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.