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ICD-10-CM Code R45.5

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
Mental Health
Mental Health Code
Indicates that the ICD code is referenced in DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Version 5)
| ICD-10 from 2011 - 2016

R45.5 is a billable ICD code used to specify a diagnosis of hostility. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

MS-DRG Mapping

  • DRG Group #880 - Acute adjustment reaction and psychosocial dysfunction.

Related Concepts SNOMET-CT

  • Emotional bullying (finding)
  • Bullying of child (finding)
  • Bullying of adult (finding)

ICD-10-CM Alphabetical Index References for 'R45.5 - Hostility'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code R45.5. Click on any term below to browse the alphabetical index.

Hostility (R45.5)


Unspecified nonpsychotic mental disorder (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 R45.5 and a single ICD9 code, 300.9 is an approximate match for comparison and conversion purposes.

Parent Code: R45 - Symptoms and signs involving emotional state

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/R455