2019 ICD-10-CM Diagnosis Code N45.1

Epididymitis

    2016 2017 2018 2019 Billable/Specific Code Male Dx
  • N45.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM N45.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of N45.1 - other international versions of ICD-10 N45.1 may differ.
ICD-10-CM Coding Rules
  • N45.1 is applicable to male patients.
The following code(s) above N45.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N45.1:
  • N00-N99
    2019 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • 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)
    Diseases of the genitourinary system
  • N45
    ICD-10-CM Diagnosis Code N45

    Orchitis and epididymitis

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Use Additional
    • code (B95-B97), to identify infectious agent.
    Orchitis and epididymitis
Clinical Information
  • Inflammation of the epididymis, convoluted cordlike structure attached to the posterior of the testis.
  • Inflammation of the epididymis. Its clinical features include enlarged epididymis, a swollen scrotum; pain; pyuria; and fever. It is usually related to infections in the urinary tract, which likely spread to the epididymis through either the vas deferens or the lymphatics of the spermatic cord.
ICD-10-CM N45.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 727 Inflammation of the male reproductive system with mcc
  • 728 Inflammation of the male reproductive system without mcc

Convert N45.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change

Diagnosis Index entries containing back-references to N45.1:
  • Didymytis N45.1
  • Epididymitis (acute) (nonvenereal) (recurrent) (residual) N45.1
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) I96
    - see also Necrosis
    ICD-10-CM Diagnosis Code I96

    Gangrene, not elsewhere classified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Gangrenous cellulitis
    Type 1 Excludes
    Type 2 Excludes
    • gangrene in diabetes mellitus (E08-E13 with .52)
    • epididymis N45.1 (infectional)
  • Periepididymitis N45.1

ICD-10-CM Codes Adjacent To N45.1
N44.0 Torsion of testis
N44.00 …… unspecified
N44.01 Extravaginal torsion of spermatic cord
N44.02 Intravaginal torsion of spermatic cord
N44.03 Torsion of appendix testis
N44.04 Torsion of appendix epididymis
N44.1 Cyst of tunica albuginea testis
N44.2 Benign cyst of testis
N44.8 Other noninflammatory disorders of the testis
N45 Orchitis and epididymitis
N45.1 Epididymitis
N45.2 Orchitis
N45.3 Epididymo-orchitis
N45.4 Abscess of epididymis or testis
N46 Male infertility
N46.0 Azoospermia
N46.01 Organic azoospermia
N46.02 Azoospermia due to extratesticular causes
N46.021 Azoospermia due to drug therapy
N46.022 Azoospermia due to infection
N46.023 Azoospermia due to obstruction of efferent ducts

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.