Adnexal Cyst ICD-10-CM Codes

Adnexal Cyst ICD-10-CM Codes

Explore ICD-10 Codes used for Adnexal Cyst. Get insights to clinical information and billing in this guide.

By Karina Jimenea on Aug 8, 2025.

Fact Checked by RJ Gumban.

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What ICD-10 Codes are Used for Adnexal Cyst 

The ICD code for adnexal cyst that practitioners often check to be used for coding, billing, and documentation are:

  • N83.291: Other ovarian cyst, right side
  • N83.292: Other ovarian cyst, left side
  • N83.299: Other ovarian cyst, unspecified side

Other possible codes practitioners may want to check that are related to the adnexal cyst diagnosis are the following:

  • C56.1: Malignant neoplasm of right ovary
  • C56.2: Malignant neoplasm of left ovary
  • C56.3: Malignant neoplasm of bilateral ovaries
  • C56.9: Malignant neoplasm of unspecified ovary
  • C57.4: Malignant neoplasm of uterine adnexa, unspecified
  • N85.8: Other specified non-inflammatory disorders of uterus

Which Adnexal Cyst ICD codes are Billable: 

All of the ICD-10 codes for adnexal cysts mentioned above are billable.

Clinical Information

  • Adnexal cysts are fluid-filled sacs in the adnexa, which are the fallopian tubes and ovaries. 
  • Common causes of adnexal cysts are ovarian cysts, hormones, bleeding during ovulation, cancer, and ectopic pregnancies. 
  • Usually, adnexal cysts are symptom-free, but if they do cause symptoms, some common ones are fullness, bloating, pain, bleeding at the site of the mass, difficult and frequent urination, and irregular periods. 
  • A pelvic ultrasound and exam is usually done to diagnose adnexal cysts. However, there are circumstances when the practitioner may require the patient to undergo further imaging and lab tests. 
  • Treatment, which is mainly surgery, is primarily required in severe cases.

Synonyms Include:

  • Benign cyst of ovary
  • Complex ovarian cyst
  • Cyst of uterine adnexa
  • Polycystic mass of uterine adnexa
  • Complex cyst of uterine adnexa
Medical Billing and Coding Software

Commonly asked questions

You can use an adnexal cyst ICD code once you’ve determined the location and nature of the cyst located in the adnexa. 

Yes, the adnexal cyst diagnosis codes are billable. 

The common treatment for adnexal cysts is surgery, especially in severe cases. 

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