Azoospermia due to obstruction of efferent ducts

This code signifies the complete absence of spermatozoa in the ejaculate (azoospermia) specifically caused by a physical blockage within the efferent ducts. This obstruction prevents sperm from being transported from the testes to the urethra, leading to male infertility.

Apply this code when documentation clearly indicates azoospermia and diagnostic workup (e.g., physical exam, semen analysis, imaging studies like scrotal ultrasound or vasography) confirms an obstructive etiology within the efferent ducts. This includes conditions like epididymal obstruction, vas deferens obstruction, or ejaculatory duct obstruction.

• Ensure documentation specifies "obstructive" azoospermia; do not use for non-obstructive causes.
• Distinguish from N46.01 (azoospermia due to germinal cell aplasia) or N46.09 (other azoospermia) which represent different etiologies.
• Consider additional codes for the specific anatomical site of obstruction if further detail is provided (e.g., N50.1 for epididymitis causing obstruction).