E70.2 Disorders of tyrosine metabolism

Not billable (header)Chapter 4

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

E70.20 Disorder of tyrosine metabolism, unspecified
E70.21 Tyrosinemia
E70.29 Other disorders of tyrosine metabolism

Instructional notes

Chapter 4

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Notes

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Section E70-E88

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

androgen insensitivity syndrome (E34.5-)
congenital adrenal hyperplasia (E25.0)
hemolytic anemias attributable to enzyme disorders (D55.-)
Marfan syndrome (Q87.4-)
5-alpha-reductase deficiency (E29.1)

Excludes2Not included here: the patient may have both; report both when both are present.

Ehlers-Danlos syndromes (Q79.6-)

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

transitory tyrosinemia of newborn (P74.5)

Chapter 4: Endocrine, nutritional and metabolic diseases · E70-E88 Metabolic disorders (E70-E88)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.