ICD-10-CM Use Additional Code Notes · Chapter 14 · FY 2027 N00-N99

Use Additional Code Notes in Chapter 14: Diseases of the genitourinary system ICD-10-CM

A Use Additional Code note means a second code should be added, after this one, to fully describe the condition. In Chapter 14 (N00-N99), notes printed in the chapter name other codes 46 times, and Use Additional Code Notes anywhere in the Tabular List name the chapter’s codes 44 times, covering 17 distinct codes, categories and ranges. Switch views to read the list either way.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
46
References in Its Notes
44
References to Its Codes
17
Chapter Codes Named
N00-N99
Chapter 14
Chapter 14

Use Additional Code Notes by the code that carries the note

27 of 27 shown
  • N10 Acute pyelonephritis
    • code (B95-B97), to identify infectious agent.
  • N11 Chronic tubulo-interstitial nephritis applies to 4 codes
    • code (B95-B97), to identify infectious agent.
  • N13.6 Pyonephrosis
    • code (B95-B97), to identify infectious agent.
  • N14 Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions applies to 6 codes
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • N18 Chronic kidney disease (CKD) applies to 9 codes
    • associated cachexia (E88.A)
    • kidney transplant status (Z94.0)
  • N18.6 End stage renal disease
    • code to identify dialysis status (Z99.2)
  • N30 Cystitis applies to 14 codes
    • code to identify infectious agent (B95-B97)
  • N31 Neuromuscular dysfunction of bladder, not elsewhere classified applies to 5 codes
    • code to identify any associated urinary incontinence (N39.3-N39.4-)
  • N34 Urethritis and urethral syndrome applies to 4 codes
    • code (B95-B97), to identify infectious agent.
  • N36.4 Urethral functional and muscular disorders applies to 4 codes
    • code to identify associated urinary stress incontinence (N39.3)
  • N39.0 Urinary tract infection, site not specified
    • code (B95-B97), to identify infectious agent.
  • N40.1 Benign prostatic hyperplasia with lower urinary tract symptoms
  • N40.3 Nodular prostate with lower urinary tract symptoms
  • N41 Inflammatory diseases of prostate applies to 7 codes
    • code (B95-B97), to identify infectious agent.
  • N43.1 Infected hydrocele
    • code (B95-B97), to identify infectious agent
  • N45 Orchitis and epididymitis applies to 4 codes
    • code (B95-B97), to identify infectious agent.
  • N47.6 Balanoposthitis
    • code (B95-B97), to identify infectious agent.
  • N47.7 Other inflammatory diseases of prepuce
    • code (B95-B97), to identify infectious agent.
  • N48.1 Balanitis
    • code (B95-B97), to identify infectious agent
  • N48.2 Other inflammatory disorders of penis applies to 3 codes
    • code (B95-B97), to identify infectious agent.
  • N49 Inflammatory disorders of male genital organs, not elsewhere classified applies to 6 codes
    • code (B95-B97), to identify infectious agent
  • N70 Salpingitis and oophoritis applies to 9 codes
    • code (B95-B97), to identify infectious agent
  • N71 Inflammatory disease of uterus, except cervix applies to 3 codes
    • code (B95-B97), to identify infectious agent
  • N72 Inflammatory disease of cervix uteri
    • code (B95-B97), to identify infectious agent
  • N73 Other female pelvic inflammatory diseases applies to 9 codes
    • code (B95-B97), to identify infectious agent.
  • N76 Other inflammation of vagina and vulva applies to 10 codes
    • code (B95-B97), to identify infectious agent
  • N81.6 Rectocele
    • code for any associated fecal incontinence, if applicable (R15.-)

The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Use Additional Code Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Use Additional Code Notes

What does a Use Additional Code note mean?

A Use Additional Code note tells you to add a second code, reported after the code that carries the note, to describe the condition completely. In an etiology/manifestation pair it sits at the etiology code and points to the manifestation (Section I.A.13). The FY 2027 Tabular List has 1,491 of them; 1,174 name other codes, with 1,438 references to 389 distinct codes, categories and ranges.

Where does the additional code go?

After the code carrying the note. For etiology/manifestation pairs the Guidelines are explicit: the etiology is sequenced first, followed by the manifestation code.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.