N80.101 — Endometriosis of right ovary, unspecified depth
Is N80.101 billable?
Yes, but N80.101 is an unspecified code. N80.101 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, N80.101 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting N80.101 — the more specific alternatives are listed below.
N80.101 at a glance
| Code | N80.101 |
|---|---|
| Description | Endometriosis of right ovary, unspecified depth |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does N80.101 group to?
N80.101 sits in MDC 13 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 742Uterine and Adnexa Procedures for Non-Malignancy with CC/MCCsurgical
- 743Uterine and Adnexa Procedures for Non-Malignancy without CC/MCCsurgical
How is N80.101 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under N80.10, the nearest indexed parent of N80.101. Use them to find the family, then select the specific code.
- Chocolate cyst (ovary)
- Sampson's cyst or tumor
- Transplants, ovarian, endometrial
- Cyst › chocolate (colloid) (mucous) (simple) (retention)
- Cyst › Sampson's (colloid) (mucous) (simple) (retention)
- Cystoma › endometrial, ovary
- Endometriosis › ovary
- Tumor › Sampson's
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N80.101, but a patient may have both at the same time. When documentation supports it, N80.101 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
How long has N80.101 existed?
N80.101 first appears in FY2023.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.