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ICD-10-CM Code R40.1

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

R40.1 is a billable ICD code used to specify a diagnosis of stupor. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code R401 is used to code Stupor

Stupor (From Latin stupere, "be stunned or amazed") is the lack of critical mental function and a level of consciousness wherein a sufferer is almost entirely unresponsive and only responds to base stimuli such as pain. Those in a stuporous state are rigid, mute and only appear to be conscious, as the eyes are open and follow surrounding objects. The word derives from the Latin stupor ("numbness, insensibility"). Being characterized by impairments to reactions to external stimuli, it usually appears in infectious diseases, complicated toxic states, severe hypothermia, mental illnesses (e.g. schizophrenia, severe clinical depression), epilepsy, vascular illnesses (e.g. hypertensive encephalopathy), shock (e.g. learning of a death or surviving a car crash), neoplasms (e.g. brain tumors), vitamin D deficiency and other maladies.

MeSH Code: D053608
ICD 9 Code: 780.09

Source: Wikipedia

Coding Notes for R40.1 Info for medical coders on how to properly use this ICD-10 code

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.
Catatonic stupor
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Catatonic schizophrenia - instead, use code F20.2
Coma - instead, use code R40.2-
Depressive stupor - instead, use Section F31-F33
Dissociative stupor - instead, use code F44.2
Manic stupor - instead, use code F30.2

MS-DRG Mapping

  • DRG Group #080-081 - Nontraumatic stupor and coma with MCC.
  • DRG Group #080-081 - Nontraumatic stupor and coma without MCC.

Related Concepts SNOMET-CT

  • Stupor (finding)

ICD-10-CM Alphabetical Index References for 'R40.1 - Stupor'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code R40.1. Click on any term below to browse the alphabetical index.

Semicoma (R40.1)
Stupor(catatonic) (R40.1)
Clouded state (R40.1)


Other alteration of consciousness (approximate match)

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 R40.1 and a single ICD9 code, 780.09 is an approximate match for comparison and conversion purposes.

Parent Code: R40 - Somnolence, stupor and coma

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/R401