1. Mary Jo Bowie MS, BS, AAS, RHIA, RHIT

2. Diseases of the Genitourinary System
CHAPTER 19
Diseases of the Genitourinary System

3. Diseases of the Genitourinary System—Code Range N00-N99
Diseases of the genitourinary system are reported from Chapter 14 of ICD-10-CM.
This chapter contains codes for diseases of the urinary system and the male and female genital tracts except for certain genitourinary transmissible infections, neoplasms, and conditions associated with pregnancy, childbirth, and the puerperium.

4. Male Reproductive System
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5. Female Reproductive System
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6. Glomerular Diseases—N00-N08
This block of codes reports:
Acute nephritic syndrome
Recurrent and persistent hematuria
Chronic nephritic syndrome
Nephrotic syndrome
Nephritic syndrome
Isolated proteinuria with specified morphological lesion
Heredity nephropathy

7. Renal Tubulo-Interstitial Diseases—N10-N16
This block of codes reports:
Acute and chronic tubulo-interstitial nephritis
Obstructive and reflux uropathy
Drug and heavy metal induced tubulo-interstitial and tubular conditions
Renal tubulo-interstitial disorders in diseases classified elsewhere

8. Acute Kidney Failure and Chronic Kidney Disease—N17-N19
This block of codes reports:
Acute kidney failure—N17, when renal function is interrupted suddenly.
Chronic kidney disease—N18, identified by stages I to V
Unspecified kidney failure—N19, includes uremia NOS

9. Urolithiasis—N20-N23 This block of codes reports:
Calculus of kidney and ureter
Calculus of lower urinary tract
Calculus of urinary tract in diseases classified elsewhere
Unspecified renal colic

10. Other Disorders of Kidney and Ureter—N25-N29
The categories here include:
N25—Disorders resulting from impaired renal tubular function
N26—Unspecified contracted kidney
N27—Small kidney of unknown cause
N28—Other disorders of kidney and ureter, NEC, including renal embolism, obstruction, occlusion, and thrombosis.
N29—Other diseases of kidney and ureter in diseases classified elsewhere

11. Other Diseases of the Urinary System—N30-N39
These categories report:
Cystitis
Neuromuscular dysfunction of bladder
Other diseases including bladder-neck obstruction, vesicointestinal fistula, diverticulum of bladder
Bladder disorders in diseases classified elsewhere
Urethritis and urethral syndrome
Urethral stricture, fistula, diverticulum, and caruncle
Urinary tract Infections
Stress incontinence

12. Sites of Urinary Tract Infections
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13. Disease of the Male Genital Organs—N40-N51
This block reports:
Enlarged prostate and inflammatory diseases of prostate
Hydrocele and spermatocele
Noninflammatory disorders of testis
Orchitis and epididymitis
Male infertility and oligospermia
Disorders of prepuce, penis, and other genital organs
Male erectile and sexual dysfunction

14. Disorders of Breast—N60-N65
This block excludes disorders of the breast
associated with childbirth.
Disorders reported here include:
Benign mammary dysplasia
Inflammatory diseases of the breast
Hypertrophy of breast
Unspecified lump in breast
Other disorders including fissure and fistula of nipple, atrophy of breast, and mastodynia

15. Inflammatory Diseases of the Female Pelvic Organs—N70-N77
This block includes:
Salpingitis and oophoritis
Inflammatory disease of uterus, except cervix
Inflammatory disease of cervix uteri
Other female pelvic inflammatory diseases including parametritis and pelvic cellulitis, and female pelvic peritonitis
Diseases of Bartholin’s gland
Other inflammation of vagina and vulva

16. Noninflammatory Disorders of Female Genital System—N80-N98
This block includes:
Endometriosis
Female genital prolapse
Fistulae involving female genital tract
Noninflammatory disorders of ovary, fallopian tubes, and broad ligament
Polyp of female genital tract
Erosion, ectropion, dysplasia of cervix uteri
Vaginal dysplasia
Menstrual disorders

17. Category N99 N99 reports Intraoperative and
Postprocedural Complications and
Disorders of Genitourinary System, NEC
The code descriptions need to be read
closely because at times the codes
differentiate between males and females.

18. Official Guidelines for Coding and Reporting
The guidelines address the following
regarding chronic kidney disease:
Stages of chronic kidney disease
Chronic kidney disease and kidney transplant status
Chronic kidney disease with other conditions

19. Coding Practice Select the code for the following:
Impacted calculus in urethra

20. Coding Practice Solution
Main term to reference in index:
Calculus
Modifying term:
Urethra (impacted)
Code Assignment:
N21.1