E70.4
Header — not billableDisorders of histidine metabolism
The ICD-10 code for disorders of histidine metabolism is E70.4.
E70.4 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- E70.0Classical phenylketonuria
- E70.1Other hyperphenylalaninemias
- E70.2Disorders of tyrosine metabolismnon-billable header
- E70.3Albinismnon-billable header
- E70.5Disorders of tryptophan metabolism
- E70.8Other disorders of aromatic amino-acid metabolismnon-billable header
- E70.9Disorder of aromatic amino-acid metabolism, unspecified
- E70.4Disorders of histidine metabolismnon-billable header