ICD-10-CM Code R40.20
Unspecified coma
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.R40.20 is a billable ICD code used to specify a diagnosis of unspecified coma. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code R402 is used to code Coma
In medicine, coma (from the Greek κῶμα koma, meaning "deep sleep") is a state of unconsciousness in which a person: cannot be awakened; fails to respond normally to painful stimuli, light, or sound; lacks a normal wake-sleep cycle; and does not initiate voluntary actions. A person in a state of coma is described as being comatose. Typically, a distinction is made in the medical community between a coma and a medically induced coma, the former is generally understood to be a result of circumstances beyond the control of the medical community, while the latter is generally understood to be a means by which medical professionals may allow a patient's injuries to heal in a controlled environment.
| Specialty: | Neurology |
| MeSH Code: | D003128 |
| ICD 9 Code: | 780.01 |
Coding Notes for R40.20 Info for medical coders on how to properly use this ICD-10 code
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Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive. - Coma NOS
- Unconsciousness NOS
MS-DRG Mapping
- DRG Group #080-081 - Nontraumatic stupor and coma with MCC.
- DRG Group #080-081 - Nontraumatic stupor and coma without MCC.
- DRG Group #793 - Full term neonate with major problems.
Related Concepts SNOMET-CT
- Post-cardiorespiratory arrest coma (disorder)
- Ischemic stroke with coma (disorder)
Coding Advice SNOMET-CT
- Consider additional code to identify specific condition or disease
- Consider time of coma scale specification
ICD-10-CM Alphabetical Index References for 'R40.20 - Unspecified coma'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code R40.20. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code R40.20 and a single ICD9 code, 780.01 is an approximate match for comparison and conversion purposes.
Parent Code: R40.2 - Coma