R79.81 Abnormal blood-gas level

Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

• 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 part of this code, but both can be coded when both are documented.

• hyperglycemia NOS (R73.9)
• abnormal findings on antenatal screening of mother (O28.-)
• abnormalities of lipids (E78.-)
• abnormalities of platelets and thrombocytes (D69.-)
• abnormalities of white blood cells classified elsewhere (D70-D72)
• coagulation hemorrhagic disorders (D65-D68)
• diagnostic abnormal findings classified elsewhere - see Alphabetical Index
• hemorrhagic and hematological disorders of newborn (P50-P61)

Use additional code

Add a second code for the following, when documented.

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