R40.20
BillableUnspecified coma
Unspecified coma
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Coma NOS
- Unconsciousness NOS
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Code First
The underlying condition must be sequenced before this code
- any associated:
- •fracture of skullS02
- •intracranial injuryS06
Related Codes(5)
Also Known As / Clinical Terms(109)
SNOMED CT
- Uraemic encephalopathy35145002
- Uremic encephalopathy35145002
- Irreversible coma73453007
- Uraemic coma95569006
- Uremic coma95569006
- Pituitary coma230795009
- Post-anoxic coma230797001
- Hypothermic coma230798006
- Post-traumatic coma230799003
- Alcoholic coma230800004
- Post-ictal coma230801000
- Post-cardiorespiratory arrest coma275470000
- Hypoxic-ischaemic coma281509000
- Hypoxic-ischemic coma281509000
- Drug-induced coma281510005
- Spontaneous eye movements in coma307690009
- Monocular movements in coma307695004
- Coma371632003
- Comatose371632003
- Exanimation371632003
- Blistering of skin due to drug-induced coma403749002
- Mental status, unconsciousness418107008
- Unconscious418107008
- Unconsciousness418107008
- Disorder of nervous system due to malnutrition related diabetes mellitus420683009
- Coma due to malnutrition-related diabetes mellitus420996007
- Unresponsive422768004
- Disorder due to malnutrition related diabetes mellitus1172389004
- Ischaemic stroke with coma140911000119109
- Ischemic stroke with coma140911000119109
UMLS
- ComaC0009421
- Coma (disorder)C0009421
- Coma NOSC0009421
- ComasC0009421
- ComatoseC0009421
- ExanimationC0009421
- Unspecified comaC0009421
- comaC0009421
- exanimationC0009421
- Consciousness awaking lossC0041657
- Consciousness lossC0041657
- Consciousness loss ofC0041657
- Consciousness, Loss ofC0041657
- Loss of ConsciousnessC0041657
- Loss of consciousnessC0041657
- Loss of consciousness (finding)C0041657
- Lost consciousnessC0041657
- Mental status, unconsciousnessC0041657
- Passing outC0041657
- State, UnconsciousC0041657
- UnconsciousC0041657
- Unconscious (finding)C0041657
- Unconscious StateC0041657
- Unconscious StatesC0041657
- UnconsciousnessC0041657
- Unconsciousness NOSC0041657
- locsC0041657
- loss of consciousnessC0041657
- unawarenessC0041657
- unconsciousC0041657
- unconsciousnessC0041657
Clinical Terms
- Comas
- exanimation
- Coma NOS
- Loss of consciousness
- Mental status, unconsciousness
- Consciousness loss of
- Loss of consciousness (finding)
- Lost consciousness
- Drug-induced coma
- unconsciousness
- Post-ictal coma
- Spontaneous eye movements in coma
- Monocular movements in coma
- State, Unconscious
- Irreversible coma
- Unconscious State
- Alcoholic coma
- Comatose
- Unconscious States
- Unconscious
- Uremic encephalopathy
- Coma
- Coma (disorder)
- Consciousness awaking loss
- Disorder of nervous system due to malnutrition related diabetes mellitus
- Unresponsive
- Uraemic coma
- unawareness
- Blistering of skin due to drug-induced coma
- Unconsciousness NOS
- locs
- Post-anoxic coma
- Uraemic encephalopathy
- Hypothermic coma
- Ischemic stroke with coma
- Consciousness loss
- Pituitary coma
- Coma due to malnutrition-related diabetes mellitus
- Passing out
- Consciousness, Loss of
- Hypoxic-ischaemic coma
- Disorder due to malnutrition related diabetes mellitus
- Unconscious (finding)
- Hypoxic-ischemic coma
- Uremic coma
- Ischaemic stroke with coma
- Post-traumatic coma
- Post-cardiorespiratory arrest coma
Frequently Asked Questions
What is the ICD-10 code for unspecified coma?
The ICD-10-CM code for unspecified coma is R40.20. The full clinical description is "Unspecified coma". R40.20 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R40.20 mean?
ICD-10-CM code R40.20 represents “Unspecified coma”. 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 R40.20 a billable code?
Yes, R40.20 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R40.20 in?
R40.20 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R40.20?
R40.20 has Excludes1 notes indicating codes that cannot be used together with it, including: neonatal coma (P91.5); somnolence, stupor and coma in diabetes (E08-E13); somnolence, stupor and coma in hepatic failure (K72.-); and 1 more.
What SNOMED CT codes does R40.20 map to?
R40.20 maps to 22 SNOMED CT concepts: 230800004, 403749002, 371632003, 420996007, 1172389004, and 17 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R40.20?
R40.20 is linked to 2 UMLS Concept Unique Identifiers: C0009421, C0041657. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R40.20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified coma 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 R40.20?
There is no direct ICD-11 mapping available for R40.20 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.