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.
Short answer: Conception occurs when the egg is released from the ovary at ovulation and meets (is fertilized by) the sperm waiting in the fallopian tube. One sperm burrows into the wall of the egg which signals cells to grow and develop. This is the moment of conception, occurring within about 24 hours of ovulation.