N83.529 — Torsion of fallopian tube, unspecified side
Is N83.529 billable?
Yes, but N83.529 will trip a Medicare edit. N83.529 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists N83.529 under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.
More specific alternatives
N83.529 at a glance
| Code | N83.529 |
|---|---|
| Description | Torsion of fallopian tube, unspecified side |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to N83.529?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name N83.529 directly.
A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.
Which MS-DRGs does N83.529 group to?
N83.529 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, N83.529 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is N83.529 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under N83.52, the nearest indexed parent of N83.529. Use them to find the family, then select the specific code.
- Torsion › fallopian tube
- Torsion › hydatid of Morgagni › female
Inclusion terms
Alternative wording in documentation that is classified to N83.529.
- Torsion of fallopian tube, NOS
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N83.529, but a patient may have both at the same time. When documentation supports it, N83.529 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 N83.529, but a patient may have both at the same time. When documentation supports it, N83.529 and the excluded code may both be reported.
- hydrosalpinx (N70.1-)
How long has N83.529 existed?
N83.529 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.