Medical coders must assign and input the correct diagnostic code to establish the amount of money a health care provider or facility gets reimbursed from the insurer. In order to maintain consistency, they must utilize standard classification systems, like ICD-9-CM/CPT/HCPCS/DRG/APC.
Sometimes a small amount of spotting or vaginal bleeding is one of the first symptoms of pregnancy. Known as implantation bleeding, it happens when the fertilised egg attaches to the lining of the uterus â about 10 to 14 days after fertilization.
Physical changes in the first month of pregnancy. The first month of pregnancy begins in the third week after your last menstrual period. During week three, the egg cell is fertilized by a sperm cell in the fallopian tube. The fertilized egg cell travels through the fallopian tube to implant in the uterus.