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R79

Non-billable

Other abnormal findings of blood chemistry

R79 is the ICD-10-CM code for Other abnormal findings of blood chemistry. It is a non-billable category code — use a more specific child code such as R79.0 for billing.

Status
Header (non-billable)
Chapter
R00-R99
Subcodes
4
Edition
FY2026

R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Excludes1 — not coded here

  • •asymptomatic hyperuricemia (E79.0)
  • •hyperglycemia NOS (R73.9)
  • •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.-)

Use additional code

  • •code to identify any retained foreign body, if applicable (Z18.-)

Frequently asked questions

What is ICD-10 code R79?
R79 is the ICD-10-CM code for "Other abnormal findings of blood chemistry". It falls under R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
Is R79 a billable code?
No — R79 is a non-billable header code. Use a more specific child code (such as R79.0) for billing.
What are the subcodes of R79?
R79 has 4 more specific child codes, including R79.0, R79.1, R79.8.
What is excluded from R79?
Excludes1 (not coded here): asymptomatic hyperuricemia (E79.0); hyperglycemia NOS (R73.9); hypoglycemia NOS (E16.2); neonatal hypoglycemia (P70.3-P70.4).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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