ICD-10-CM Code E70.2
Disorders of tyrosine metabolism
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code E70.2 is a non-billable code. To code a diagnosis of this type, you must use one of the three child codes of E70.2 that describes the diagnosis 'disorders of tyrosine metabolism' in more detail.
- E70.2 Disorders of tyrosine metabolism NON-BILLABLE
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- BILLABLE E70.20 Disorder of tyrosine metabolism, unspecified
- BILLABLE E70.21 Tyrosinemia
- BILLABLE E70.29 Other disorders of tyrosine metabolism
The ICD code E702 is used to code Alkaptonuria
Alkaptonuria (black urine disease, black bone disease, or alcaptonuria) is a rare inherited genetic disorder in which the body cannot process the amino acids phenylalanine and tyrosine, which occur in protein. It is caused by a mutation in the HGD gene for the enzyme homogentisate 1,2-dioxygenase (EC 1.13.11.5); if a person inherits abnormal copies from each parent (it is a recessive condition) the body accumulates an intermediate substance called homogentisic acid in the blood and tissues. Homogentisic acid and its oxidated form alkapton are excreted in the urine, giving it an unusually dark color. The accumulating homogentisic acid causes damage to cartilage (ochronosis, leading to osteoarthritis) and heart valves as well as precipitating as kidney stones and stones in other organs. Symptoms usually develop in people over thirty years old, although the dark discoloration of the urine is present from birth.
| Specialty: | Endocrinology |
| MeSH Code: | D000474 |
| ICD 9 Code: | 270.2 |
Pigmentation of the face in alkaptonuria
Coding Notes for E70.2 Info for medical coders on how to properly use this ICD-10 code
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Transitory tyrosinemia of newborn - instead, use code P74.5
Related Concepts SNOMET-CT
- Persistent hyperphenylalaninemia AND tyrosinemia (disorder)
ICD-10-CM Alphabetical Index References for 'E70.2 - Disorders of tyrosine metabolism'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code E70.2. Click on any term below to browse the alphabetical index.
Parent Code: E70 - Disorders of aromatic amino-acid metabolism