E70.5
✓ Billable
Disorders of tryptophan metabolism
ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases
Code
E70.5
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code E70.5?
ICD-10-CM code E70.5 represents Disorders of tryptophan metabolism. It is a billable diagnosis code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E70.5 billable?
Yes. E70.5 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is E70.5 in?
E70.5 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.
Related codes in the E70 category
E70
Disorders of aromatic amino-acid metabolism
Non-billable
E70.0
Classical phenylketonuria
Billable
E70.1
Other hyperphenylalaninemias
Billable
E70.2
Disorders of tyrosine metabolism
Non-billable
E70.3
Albinism
Non-billable
E70.4
Disorders of histidine metabolism
Non-billable
E70.8
Other disorders of aromatic amino-acid metabolism
Non-billable
E70.9
Disorder of aromatic amino-acid metabolism, unspecified
Billable
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