E70.29 Other disorders of tyrosine metabolism

The ICD-10-CM code for Other disorders of tyrosine metabolism is E70.29 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E70-E88: Metabolic disorders (E70-E88)

Category E70

34 codes (26 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E70.29:

• Alkaptonuria
• Tyrosinuria
• Homogentisate 1,2-dioxygenase deficiency
• Alcaptonuria
• Ochronosis (endogenous)
• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › ochronotic
• Osteoarthrosis (degenerative) (hypertrophic) (joint) › deformans alkaptonurica
• Deficiency, deficient › homogentisate 1,2-dioxygenase

Inclusion Terms

• Alkaptonuria
• Ochronosis

U.S. Hospital Utilization

• An estimated 80 U.S. inpatient stays in 2023 included E70.29 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)