R79.81
BillableAbnormal blood-gas level
Abnormal blood-gas level
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •asymptomatic hyperuricemiaE79.0
- •hyperglycemia NOSR73.9
- •hypoglycemia NOSE16.2
- •neonatal hypoglycemiaP70.3-P70.4
- •specific findings indicating disorder of amino-acid metabolismE70-E72
- •specific findings indicating disorder of carbohydrate metabolismE73-E74
- •specific findings indicating disorder of lipid metabolismE75
Excludes 2
Conditions not included here, but the patient may have both
- •abnormal findings on antenatal screening of motherO28
- •certain conditions originating in the perinatal periodP04-P96
- signs and symptoms classified in the body system chapters
- •signs and symptoms of breast,N63, N64.5
- •abnormalities of lipidsE78
- •abnormalities of platelets and thrombocytesD69
- •abnormalities of white blood cells classified elsewhereD70-D72
- •coagulation hemorrhagic disordersD65-D68
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index
- •hemorrhagic and hematological disorders of newbornP50-P61
Use Additional Code
Additional codes that should follow this code
Related Codes(3)
Also Known As / Clinical Terms(74)
SNOMED CT
- Hypocapnaemia61031008
- Hypocapnemia61031008
- Hypocapnia61031008
- Hypocarbia61031008
- Abnormal blood oxygen pressure123821009
- Blood oxygen level abnormal167026000
- Blood oxygen level outside reference range167026000
- Arterial carbon dioxide abnormal167030002
- Arterial carbon dioxide outside reference range167030002
- Blood gases abnormal312391003
- Blood gases outside reference range312391003
- Arterial carbon dioxide tension373677008
- Arterial partial pressure of carbon dioxide373677008
- Finding of arterial partial pressure of carbon dioxide373677008
- PaCO2 - Arterial carbon dioxide tension373677008
- paCO2 - Arterial partial pressure of carbon dioxide373677008
- Finding of oxygen saturation447755005
- Abnormal arterial blood gas448531004
- Arterial blood gas outside reference range448531004
- Low oxygen saturation449171008
- Oxygen saturation below reference range449171008
- Finding of arterial blood pH1148588005
- Finding of venous blood pH1148589002
- Venous blood pH outside reference range1148592003
- Arterial blood pH outside reference range1148593008
- Blood oxygen concentration below reference range1157018000
- Arterial partial pressure of carbon dioxide above reference range1187183007
- Arterial partial pressure of carbon dioxide below reference range1187184001
- Oxygen saturation above reference range1351951002
- Oxygen saturation in arterial blood above reference range1351952009
- SaO2 (arterial oxygen saturation) above reference range1351952009
UMLS
Clinical Terms
- Blood gases outside reference range
- Arterial blood gas outside reference range
- Arterial blood pH outside reference range
- Venous blood pH outside reference range
- Abnormal arterial blood gas
- Oxygen saturation above reference range
- Arterial partial pressure of carbon dioxide
- Arterial carbon dioxide abnormal
- Hypocapnemia
- Arterial partial pressure of carbon dioxide below reference range
- Finding of venous blood pH
- Hypocapnia
- Finding of oxygen saturation
- Finding of arterial blood pH
- Blood oxygen level outside reference range
- Abnormal blood gas level
- Arterial partial pressure of carbon dioxide above reference range
- Blood gases abnormal
- paCO2 - Arterial partial pressure of carbon dioxide
- Oxygen saturation below reference range
- Blood oxygen concentration below reference range
- Arterial carbon dioxide tension
- Hypocarbia
- Arterial carbon dioxide outside reference range
- Blood oxygen level abnormal
- Hypocapnaemia
- Oxygen saturation in arterial blood above reference range
- Blood gases outside reference range (finding)
- Blood gases NOS abnormal
- Low oxygen saturation
- abnormal blood gases
- Abnormal blood oxygen pressure
- SaO2 (arterial oxygen saturation) above reference range
- PaCO2 - Arterial carbon dioxide tension
- Finding of arterial partial pressure of carbon dioxide
Frequently Asked Questions
What is the ICD-10 code for abnormal blood-gas level?
The ICD-10-CM code for abnormal blood-gas level is R79.81. The full clinical description is "Abnormal blood-gas level". R79.81 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R79.81 mean?
ICD-10-CM code R79.81 represents “Abnormal blood-gas level”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.
Is R79.81 a billable code?
Yes, R79.81 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R79.81 in?
R79.81 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R79.81?
R79.81 has Excludes1 notes indicating codes that cannot be used together with it, including: asymptomatic hyperuricemia (E79.0); hyperglycemia NOS (R73.9); hypoglycemia NOS (E16.2); and 4 more.
Are additional codes required with R79.81?
Yes, when using R79.81, also report: any retained foreign body, if applicable (Z18.-).
What SNOMED CT codes does R79.81 map to?
R79.81 maps to 18 SNOMED CT concepts: 448531004, 123821009, 1148593008, 167030002, 373677008, and 13 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R79.81?
R79.81 is linked to 1 UMLS Concept Unique Identifier: C0476337. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R79.81 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like abnormal blood-gas level affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of R79.81?
There is no direct ICD-11 mapping available for R79.81 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.