ICD-10-CM 2027
ICD-10 code for appendix testis torsion
From the official ICD-10-CM alphabetic index entry “Torsion › appendix testis”. Page updated September 29, 2026.
About coding appendix testis torsion
The ICD-10-CM code for appendix testis torsion is N44.03 (Torsion of appendix testis).
Within N44.0 (torsion of testis), N44.03 is specifically for torsion of appendix testis. Related codes cover unspecified (N44.00), Extravaginal torsion of spermatic cord (N44.01), Intravaginal torsion of spermatic cord (N44.02) and torsion of appendix epididymis (N44.04).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 729 (Other Male Reproductive System Diagnoses with CC/MCC, relative weight 1.0544) and DRG 730 (Other Male Reproductive System Diagnoses without CC/MCC, relative weight 0.6597), in MDC 12 (Diseases and Disorders of the Male Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about appendix testis torsion ICD-10 codes
What is the ICD-10 code for appendix testis torsion?
- N44.03 — Torsion of appendix testis.
Is N44.03 billable?
- Yes. N44.03 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N44.03 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N44.03 as a principal diagnosis.
Is N44.03 a CC or MCC?
- N44.03 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.