2026 ICD-10-CM Diagnosis Code N83.209Unspecified ovarian cyst, unspecified side
ICD-10-CM Codes›N00–N99›N80-N98›N83
- Billable — Valid for Submission
- Not Chronic
N83.209 is a billable ICD-10-CM diagnosis code for unspecified ovarian cyst, unspecified side. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 742 through 743, 760 through 761. Coders also document this condition as cyst of ovary. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign ovarian cyst.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cyst of ovary
- Cyst of ovary in pregnancy
- Hemorrhagic cyst of ovary
- Rupture of ovary
- Ruptured cyst of ovary
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Ovarian cyst, NOS
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ovarian Cysts
general term for cysts and cystic diseases of the ovary.
Patient EducationClinical
Ovarian Cysts
The ovaries are part of the female reproductive system. They produce a woman's eggs and make female hormones. Ovarian cysts are fluid-filled sacs in or on an ovary. They usually form during ovulation, when the ovary releases an egg. They are usually harmless and go away by themselves. Most women have them sometime during their lives.
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Convert N83.209 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replacement N83.209 replaces the following previously assigned code(s):
- N83.20 - Unspecified ovarian cysts
Questions About N83.209Overview
Is N83.209 (Unspecified ovarian cysts) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified ovarian cyst, unspecified side on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does N83.209 group to?
When unspecified ovarian cyst, unspecified side is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of N83.209?
Under the General Equivalence Mappings, unspecified ovarian cyst, unspecified side converts to ICD-9-CM 620.2 (ovarian cyst NEC/NOS). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
