Endometriosis of left ovary, unspecified depth

This code signifies the presence of endometrial-like tissue on the left ovary, without further specification of how deeply it has infiltrated the ovarian tissue. This ectopic tissue can cause pain, inflammation, and fertility issues. It represents a diagnosis of endometriosis localized to the left adnexa.

Use this code when documentation confirms endometriosis affecting the left ovary, but the provider does not specify the depth of the lesion (e.g., superficial vs. deep infiltrating). This is appropriate when the laterality is clearly stated as left, and the affected organ is the ovary.

• Ensure documentation explicitly states "left ovary" and "endometriosis."
• If the depth of infiltration is specified (e.g., superficial, deep), a more specific subcategory code should be used.
• Do not use this code if the endometriosis affects other pelvic organs or is generalized without specific ovarian involvement.