R79.83
Billable codeAbnormal findings of blood amino-acid level
The ICD-10 code for abnormal findings of blood amino-acid level is R79.83.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Homocysteinemia
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R79.81Abnormal blood-gas level
- R79.82Elevated C-reactive protein (CRP)
- R79.89Other specified abnormal findings of blood chemistry
- R79.83Abnormal findings of blood amino-acid level
Associated MS-DRGs
R79.83 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.