ICD-10-CM Code First Notes · Chapter 11 · FY 2027 K00-K95

Code First Notes in Chapter 11: Diseases of the digestive system ICD-10-CM

A Code First note means the underlying condition named in the note is sequenced before this code. In Chapter 11 (K00-K95), notes printed in the chapter name other codes 34 times, and Code First Notes anywhere in the Tabular List name the chapter’s codes 21 times, covering 16 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
34
References in Its Notes
21
References to Its Codes
16
Chapter Codes Named
K00-K95
Chapter 11
Chapter 11

Code First Notes by the code that carries the note

15 of 15 shown
  • K05.1 Chronic gingivitis applies to 2 codes
    • , if applicable, diseases of the digestive system complicating pregnancy (O99.61-)
  • K22.1 Ulcer of esophagus applies to 2 codes
    • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
  • K23 Disorders of esophagus in diseases classified elsewhere
    • congenital syphilis (A50.5)
  • K31.84 Gastroparesis
  • K52.1 Toxic gastroenteritis and colitis
    • (T51-T65) to identify toxic agent
  • K59.3 Megacolon, not elsewhere classified applies to 2 codes
    • , if applicable (T51-T65) to identify toxic agent
  • K60.3 Anal fistula applies to 9 codes
  • K60.4 Rectal fistula applies to 9 codes
  • K60.5 Anorectal fistula applies to 9 codes
  • K67 Disorders of peritoneum in infectious diseases classified elsewhere
  • K71 Toxic liver disease applies to 12 codes
    • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
  • K74.0 Hepatic fibrosis applies to 4 codes
    • nonalcoholic steatohepatitis (NASH) (K75.81)
  • K76.81 Hepatopulmonary syndrome
    • alcoholic cirrhosis of liver (K70.3-)
    • cirrhosis of liver without mention of alcohol (K74.6-)
  • K77 Liver disorders in diseases classified elsewhere
  • K82.A Disorders of gallbladder in diseases classified elsewhere applies to 2 codes

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 Code First Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Code First Notes

What does a Code First note mean?

A Code First note means the underlying condition named in the note is sequenced before the code that carries the note. Under the etiology/manifestation convention, a “code first” note appears at the manifestation code and a “use additional code” note at the etiology code (Section I.A.13). The FY 2027 Tabular List has 810 of them; 600 name other codes, with 736 references to 429 distinct codes, categories and ranges.

Can a code with a Code First note be the principal diagnosis?

Not when it is a manifestation code. Codes titled “in diseases classified elsewhere” are never permitted as the first-listed or principal diagnosis; they must follow the underlying condition. The etiology and manifestation page lists them all.

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.