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ICD-10-CM · FY 2026 APRIL UPDATE

R40

Somnolence, stupor and coma

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
R40.0SomnolenceBillable
R40.1StuporBillable
R40.2ComaCategory
R40.20Unspecified comaBillable
R40.21Coma scale, eyes openCategory
R40.211Coma scale, eyes open, neverCategory
R40.2110Coma scale, eyes open, never, unspecified timeBillable
R40.2111Coma scale, eyes open, never, in the field [EMT or ambulance]Billable
R40.2112Coma scale, eyes open, never, at arrival to emergency departmentBillable
R40.2113Coma scale, eyes open, never, at hospital admissionBillable
R40.2114Coma scale, eyes open, never, 24 hours or more after hospital admissionBillable
R40.212Coma scale, eyes open, to painCategory
R40.2120Coma scale, eyes open, to pain, unspecified timeBillable
R40.2121Coma scale, eyes open, to pain, in the field [EMT or ambulance]Billable
R40.2122Coma scale, eyes open, to pain, at arrival to emergency departmentBillable
R40.2123Coma scale, eyes open, to pain, at hospital admissionBillable
R40.2124Coma scale, eyes open, to pain, 24 hours or more after hospital admissionBillable
R40.213Coma scale, eyes open, to soundCategory
R40.2130Coma scale, eyes open, to sound, unspecified timeBillable
R40.2131Coma scale, eyes open, to sound, in the field [EMT or ambulance]Billable
R40.2132Coma scale, eyes open, to sound, at arrival to emergency departmentBillable
R40.2133Coma scale, eyes open, to sound, at hospital admissionBillable
R40.2134Coma scale, eyes open, to sound, 24 hours or more after hospital admissionBillable
R40.214Coma scale, eyes open, spontaneousCategory
R40.2140Coma scale, eyes open, spontaneous, unspecified timeBillable
R40.2141Coma scale, eyes open, spontaneous, in the field [EMT or ambulance]Billable
R40.2142Coma scale, eyes open, spontaneous, at arrival to emergency departmentBillable
R40.2143Coma scale, eyes open, spontaneous, at hospital admissionBillable
R40.2144Coma scale, eyes open, spontaneous, 24 hours or more after hospital admissionBillable
R40.22Coma scale, best verbal responseCategory

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.