R79
R79: Other abnormal findings of blood chemistry
Non-billable headerICD-10-CM
R79 is a non-billable header ICD-10-CM code for other abnormal findings of blood chemistry. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- asymptomatic hyperuricemia (E79.0)
- hypoglycemia NOS (E16.2)
- neonatal hypoglycemia (P70.3-P70.4)
- specific findings indicating disorder of amino-acid metabolism (E70-E72)
- specific findings indicating disorder of carbohydrate metabolism (E73-E74)
- specific findings indicating disorder of lipid metabolism (E75.-)
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- hyperglycemia NOS (R73.9)
Use additional code
Add a secondary code to capture the detail described below.
- code to identify any retained foreign body, if applicable (Z18.-)
Other codes that can never be billed with R79
Their own Excludes1 notes name this code, so the conflict is not listed above.
- D68Other coagulation defects
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead R79
4 child codes. Green means billable.