Information for Patients
Monkeypox Virus Infections
Monkeypox is a rare viral disease. It occurs mostly in central and western Africa. Wild rodents and squirrels carry it, but it is called monkeypox because scientists saw it first in lab monkeys. In 2003, it was reported in prairie dogs and humans in the U.S.
Centers for Disease Control and Prevention
General Equivalence Map Definitions
The ICD-10 and ICD-9 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.