N83.521 — Torsion of right fallopian tube
Is N83.521 billable?
Yes — N83.521 is billable for FY2027. N83.521 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N83.521 may be submitted for encounters from October 1, 2026 through September 30, 2027.
N83.521 at a glance
| Code | N83.521 |
|---|---|
| Description | Torsion of right fallopian tube |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does N83.521 group to?
N83.521 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
As a secondary diagnosis, N83.521 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is N83.521 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under N83.52, the nearest indexed parent of N83.521. Use them to find the family, then select the specific code.
- Torsion › fallopian tube
- Torsion › hydatid of Morgagni › female
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N83.521, but a patient may have both at the same time. When documentation supports it, N83.521 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)
Excludes2 — not included here — inherited from N83
The conditions below are not part of N83.521, but a patient may have both at the same time. When documentation supports it, N83.521 and the excluded code may both be reported.
- hydrosalpinx (N70.1-)
How long has N83.521 existed?
N83.521 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.