Abnormal blood-gas level
Billable / specific
R79.81 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes (from R79)
- Note: This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Note: Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- Note: The conditions and signs or symptoms included in categories R00-R94 consist of:
- Note: (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- Note: (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- Note: (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- Note: (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- Note: (e) cases in which a more precise diagnosis was not available for any other reason;
- Note: (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Excludes1
Not coded here — never report together with this code.
- asymptomatic hyperuricemia (E79.0) (from R79)
- hypoglycemia NOS (E16.2) (from R79)
- neonatal hypoglycemia (P70.3-P70.4) (from R79)
- specific findings indicating disorder of amino-acid metabolism (E70-E72) (from R79)
- specific findings indicating disorder of carbohydrate metabolism (E73-E74) (from R79)
- specific findings indicating disorder of lipid metabolism (E75.-) (from R79)
Excludes2
Not included here — may be reported together when both conditions exist.
- abnormal findings on antenatal screening of mother (O28.-) (from R79)
- certain conditions originating in the perinatal period (P04-P96) (from R79)
- signs and symptoms classified in the body system chapters (from R79)
- signs and symptoms of breast (N63, N64.5) (from R79)
- abnormal findings on antenatal screening of mother (O28.-) (from R79)
- abnormalities of lipids (E78.-) (from R79)
- abnormalities of platelets and thrombocytes (D69.-) (from R79)
- abnormalities of white blood cells classified elsewhere (D70-D72) (from R79)
- coagulation hemorrhagic disorders (D65-D68) (from R79)
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index (from R79)
- hemorrhagic and hematological disorders of newborn (P50-P61) (from R79)
- hyperglycemia NOS (R73.9) (from R79)
Use additional code
Add a code to identify the following, if applicable.
Also known as
- Abnormal, abnormality, abnormalities, blood-gas level
- Abnormal, abnormality, abnormalities, chemistry, blood, gas level
Parent code
- R79.8Other specified abnormal findings of blood chemistryHeader