ICD-9 Code 979.0

Poisoning by smallpox vaccine

Not Valid for Submission

979.0 is a legacy non-billable code used to specify a medical diagnosis of poisoning by smallpox vaccine. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 979.0
Short Description:Poison-smallpox vaccine
Long Description:Poisoning by smallpox vaccine

Convert 979.0 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • T50.B11A - Poisoning by smallpox vaccines, accidental, init
  • T50.B12A - Poisoning by smallpox vaccines, intentional self-harm, init
  • T50.B13A - Poisoning by smallpox vaccines, assault, initial encounter
  • T50.B14A - Poisoning by smallpox vaccines, undetermined, init encntr

Code Classification

  • Injury and poisoning (800–999)
    • Poisoning by drugs, medicinals and biological substances (960-979)
      • 979 Poisoning by other vaccines and biological substances

Information for Medical Professionals

ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.