All ICD10 Codes

R40.20

Billable
ChapterR00–R99
Ranksubcategory
Official Description

Unspecified coma

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

Instructional Notes

Includes
  • Coma NOS
  • Unconsciousness NOS
General instructions are available for the parent sections:
View CH18 NotesView R40-R46 NotesView R40 NotesView R40.2 Notes

Clinical Hierarchy

BillableHas subcodes
CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R40-R46Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
R40Somnolence, stupor and coma
R40.2Coma
R40.20Unspecified comaBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R40.20:

categoryR40
Somnolence, stupor and coma
View context instructions
blockR40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
View context instructions
chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

Code History

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 080
Nontraumatic Stupor and Coma with MCC
DRG 081
Nontraumatic Stupor and Coma without MCC
DRG 791
Prematurity with Major Problems
DRG 793
Full Term Neonate with Major Problems

Cross Reference

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