ICD-10-CM 2027
ICD-10 code for Tyrosinuria
From the official ICD-10-CM alphabetic index entry “Tyrosinuria”. Page updated September 29, 2026.
About coding Tyrosinuria
The ICD-10-CM code for Tyrosinuria is E70.29 (Other disorders of tyrosine metabolism).
Within E70.2, choose E70.29 (Other disorders of tyrosine metabolism) only when documentation doesn't support a more specific option: disorder of tyrosine metabolism, unspecified (E70.20) and tyrosinemia (E70.21).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 642 (Inborn and Other Disorders of Metabolism, relative weight 1.3219), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Tyrosinuria ICD-10 codes
What is the ICD-10 code for Tyrosinuria?
- E70.29 — Other disorders of tyrosine metabolism.
Is E70.29 billable?
- Yes. E70.29 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E70.29 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E70.29 as a principal diagnosis.
Is E70.29 a CC or MCC?
- E70.29 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.