E70
Non-Billable

Disorders of aromatic amino-acid metabolism

Non-Billable / Non-Specific Code

What is Disorders of aromatic amino-acid metabolism?

ICD-10-CM E70 is the diagnosis code for Disorders of aromatic amino-acid metabolism. This code falls under the section "Metabolic disorders" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for E70

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.

ICD-10-CM Code Hierarchy

Understanding where E70 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeE70 — Disorders of aromatic amino-acid metabolism
Sub-Codes 8 entries
E70.0Classical phenylketonuriaBillableE70.1Other hyperphenylalaninemiasBillableE70.2Disorders of tyrosine metabolismNon-BillableE70.20Disorder of tyrosine metabolism, unspecifiedBillableE70.21TyrosinemiaBillableE70.29Other disorders of tyrosine metabolismBillableE70.3AlbinismNon-BillableE70.30Albinism, unspecifiedBillableE70.31Ocular albinismNon-BillableE70.310X-linked ocular albinismBillableE70.311Autosomal recessive ocular albinismBillableE70.318Other ocular albinismBillableE70.319Ocular albinism, unspecifiedBillableE70.32Oculocutaneous albinismNon-BillableE70.320Tyrosinase negative oculocutaneous albinismBillableE70.321Tyrosinase positive oculocutaneous albinismBillableE70.328Other oculocutaneous albinismBillableE70.329Oculocutaneous albinism, unspecifiedBillableE70.33Albinism with hematologic abnormalityNon-BillableE70.330Chediak-Higashi syndromeBillableE70.331Hermansky-Pudlak syndromeBillableE70.338Other albinism with hematologic abnormalityBillableE70.339Albinism with hematologic abnormality, unspecifiedBillableE70.39Other specified albinismBillableE70.4Disorders of histidine metabolismNon-BillableE70.40Disorders of histidine metabolism, unspecifiedBillableE70.41HistidinemiaBillableE70.49Other disorders of histidine metabolismBillableE70.5Disorders of tryptophan metabolismBillableE70.8Other disorders of aromatic amino-acid metabolismNon-BillableE70.81Aromatic L-amino acid decarboxylase deficiencyBillableE70.89Other disorders of aromatic amino-acid metabolismBillableE70.9Disorder of aromatic amino-acid metabolism, unspecifiedBillable
Related Codes

Frequently Asked Questions

Is E70 a billable ICD-10-CM code?

No, E70 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does E70 mean?

E70 is the ICD-10-CM diagnosis code for "Disorders of aromatic amino-acid metabolism". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is E70 in?

E70 is located in Section E70-E88 — "Metabolic disorders" within Chapter 4 of the ICD-10-CM Tabular List.

What are the sub-codes of E70?

E70 has 8 sub-code(s) that provide more specific detail: E70.0, E70.1, E70.2, E70.3, E70.4 and more.

When should I use E70?

Use E70 when the patients documented diagnosis matches "Disorders of aromatic amino-acid metabolism" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Disorders of aromatic amino-acid metabolism?

The ICD-10-CM code for Disorders of aromatic amino-acid metabolism is E70.

Can E70 be used for primary diagnosis?

No, E70 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is E70 in?

E70 is in Chapter 4 of the ICD-10-CM Tabular List.

Is E70 valid for 2026?

Yes, E70 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousE68Sequelae of hyperalimentationNext →E70.0Classical phenylketonuria
Code Details
E70
Disorders of aromatic amino-acid metabolism
Non-Billable / Non-Specific Code
4 — Endocrine, nutritional and metabolic diseases (E00-E89)
E70-E88 — Metabolic disorders
2026 ICD-10-CM