Corpus luteum cyst of left ovary

This code identifies a benign, fluid-filled sac that forms on the left ovary after an egg has been released from the follicle. It typically develops from the corpus luteum, the temporary endocrine structure that forms after ovulation, and is usually asymptomatic and resolves spontaneously.

Apply this code when documentation specifically indicates a corpus luteum cyst located on the left ovary. This diagnosis is often made incidentally during imaging studies (e.g., ultrasound) performed for other gynecological concerns or during a routine pelvic exam.

• Ensure laterality is clearly documented as "left ovary" to support this specific code.
• Distinguish from other ovarian cyst types (e.g., follicular cyst, endometrioma) which have different codes.
• Do not use for unspecified ovarian cysts; seek clarification if laterality or type is not specified.