Diagnosis Code Z20.4
Information for Medical Professionals
Information for Patients
Also called: German measles, Three day measles
Rubella is an infection caused by a virus. It is usually mild with fever and a rash. About half of the people who get rubella do not have symptoms. If you do get them, symptoms may include
- A rash that starts on the face and spreads to the body
- Mild fever
- Aching joints, especially in young women
- Swollen glands
Rubella is most dangerous for a pregnant woman's baby. It can cause miscarriage or birth defects.
Rubella spreads when an infected person coughs or sneezes. People without symptoms can still spread it. There is no treatment, but the measles-mumps-rubella (MMR) vaccine can prevent it.
Centers for Disease Control and Prevention
- Congenital rubella (Medical Encyclopedia)
- MMR (Measles, Mumps and Rubella) Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
- MMRV (Measles, Mumps, Rubella, and Varicella) Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
- Rubella (Medical Encyclopedia)
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.
Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.