R40.2A Billable Code
Nontraumatic coma due to underlying condition
Effective From: 10/01/2023
Chapter Classification
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Section Detail
R40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
Code Hierarchy
This code is a child of R40.2.
Coding Guidelines & Notes
codeFirst
- underlying condition
excludes1
- coma scale, best motor response (R40.24.-)
- coma scale, best verbal response (R40.22.-)
- coma scale, eyes open (R40.21.-)
- Glasgow coma scale, total score (R40.23.-)
OPPS Editing Flags
External Cause
No
Mental Health
No
Manifestation (Edit 89)
No
Code First Applicable This code represents a manifestation of an underlying disease. The underlying condition must be coded first as the principal diagnosis.
No
Unacceptable PDX (Edit 113)
Yes
PDX Exclusion Logic
- OPPS Required: No
- Bill Type Override: No
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