Doctors use abbreviations on medical charts to reduce charting time, record information in a succinct way and to communicate with other healthcare professionals in the medical field concerning a patient's status or medical care. There are thousands of medical abbreviations used by healthcare professionals in different medical settings for prescribing medications.
At a hospital, patient charts and medical records can contain abbreviations in regard to gender, ethnicity and the condition being treated. For example, for an African-American female patient, a common abbreviation is AAF, as stated by MedicineNet. If she has an anterior cruciate ligament injury, then the abbreviation on her medical chart for this condition would be ACL. Some other familiar abbreviations are Dx for diagnosis and NKA for no known allergies.