N80.541 — Superficial endometriosis of the appendix
Is N80.541 billable?
Yes — N80.541 is billable for FY2027. N80.541 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N80.541 may be submitted for encounters from October 1, 2026 through September 30, 2027.
N80.541 at a glance
| Code | N80.541 |
|---|---|
| Description | Superficial endometriosis of the appendix |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does N80.541 group to?
N80.541 sits in MDC 06 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.
- 391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCCmedical
- 392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCCmedical
How is N80.541 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to N80.541. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Endometriosis › appendix › superficial
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N80.541, but a patient may have both at the same time. When documentation supports it, N80.541 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 N80.541 existed?
N80.541 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.