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

Use Additional Code Notes in Chapter 11: Diseases of the digestive 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 11 (K00-K95), notes printed in the chapter name other codes 109 times, and Use Additional Code Notes anywhere in the Tabular List name the chapter’s codes 34 times, covering 14 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
109
References in Its Notes
34
References to Its Codes
14
Chapter Codes Named
K00-K95
Chapter 11
Chapter 11

Use Additional Code Notes by the code that carries the note

48 of 48 shown
  • K05 Gingivitis and periodontal diseases applies to 25 codes
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • exposure to tobacco smoke in the perinatal period (P96.81)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
  • K06.2 Gingival and edentulous alveolar ridge lesions associated with trauma
    • code (Chapter 20) to identify external cause or denture status (Z97.2)
  • K11 Diseases of salivary glands applies to 13 codes
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • exposure to tobacco smoke in the perinatal period (P96.81)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
  • K12 Stomatitis and related lesions applies to 8 codes
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • exposure to tobacco smoke in the perinatal period (P96.81)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
  • K12.31 Oral mucositis (ulcerative) due to antineoplastic therapy
    • code for adverse effect, if applicable, to identify antineoplastic and immunosuppressive drugs (T45.1X5)
    • radiological procedure and radiotherapy (Y84.2)
  • K12.32 Oral mucositis (ulcerative) due to other drugs
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • K12.33 Oral mucositis (ulcerative) due to radiation
  • K13 Other diseases of lip and oral mucosa applies to 13 codes
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • exposure to tobacco smoke in the perinatal period (P96.81)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
  • K14 Diseases of tongue applies to 9 codes
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
  • K20 Esophagitis applies to 5 codes
    • alcohol abuse and dependence (F10.-)
  • K22.1 Ulcer of esophagus applies to 2 codes
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • K25 Gastric ulcer applies to 9 codes
    • alcohol abuse and dependence (F10.-)
  • K26 Duodenal ulcer applies to 9 codes
    • alcohol abuse and dependence (F10.-)
  • K27 Peptic ulcer, site unspecified applies to 9 codes
    • alcohol abuse and dependence (F10.-)
  • K28 Gastrojejunal ulcer applies to 9 codes
    • alcohol abuse and dependence (F10.-)
  • K29.0 Acute gastritis applies to 2 codes
    • alcohol abuse and dependence (F10.-)
  • K29.2 Alcoholic gastritis applies to 2 codes
    • alcohol abuse and dependence (F10.-)
  • K50 Crohn's disease [regional enteritis] applies to 28 codes
  • K51 Ulcerative colitis applies to 49 codes
  • K52.1 Toxic gastroenteritis and colitis
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • K52.2 Allergic and dietetic gastroenteritis and colitis applies to 3 codes
  • K52.21 Food protein-induced enterocolitis syndrome
    • code for hypovolemic shock, if present (R57.1)
  • K59.03 Drug induced constipation
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • K62.7 Radiation proctitis
    • code to identify the type of radiation (W88.-)
    • or radiation therapy (Y84.2)
  • K62.81 Anal sphincter tear (healed) (nontraumatic) (old)
    • code for any associated fecal incontinence (R15.-)
  • K62.89 Other specified diseases of anus and rectum
    • code for any associated fecal incontinence (R15.-)
  • K65 Peritonitis applies to 7 codes
    • code (B95-B97), to identify infectious agent, if known
  • K6A.0 Pelvic abscess applies to 2 codes
    • code (B95-B97), to identify infectious agent, if known
  • K70 Alcoholic liver disease applies to 9 codes
    • alcohol abuse and dependence (F10.-)
  • K71 Toxic liver disease applies to 12 codes
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • K72 Hepatic failure, not elsewhere classified applies to 6 codes
    • code, if applicable, for ascites (R18.8)
  • K73 Chronic hepatitis, not elsewhere classified applies to 5 codes
    • code, if applicable, for ascites (R18.8)
  • K75.81 Nonalcoholic steatohepatitis (NASH)
    • code, if applicable, hepatic fibrosis (K74.0-)
  • K76.6 Portal hypertension
    • portal hypertensive gastropathy (K31.89)
  • K80.0 Calculus of gallbladder with acute cholecystitis applies to 2 codes
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
  • K80.1 Calculus of gallbladder with other cholecystitis applies to 6 codes
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
  • K80.4 Calculus of bile duct with cholecystitis applies to 8 codes
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
  • K80.6 Calculus of gallbladder and bile duct with cholecystitis applies to 8 codes
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
  • K81 Cholecystitis applies to 4 codes
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
  • K85.3 Drug induced acute pancreatitis applies to 3 codes
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    • code to identify drug abuse and dependence (F11.-F17.-)
  • K86.0 Alcohol-induced chronic pancreatitis
    • alcohol abuse and dependence (F10.-)
  • K90.0 Celiac disease
  • K90.822 Short bowel syndrome without colon in continuity
    • code, if applicable, for colostomy status (Z93.3)
  • K94.02 Colostomy infection
  • K94.12 Enterostomy infection
  • K94.22 Gastrostomy infection
  • K95.01 Infection due to gastric band procedure
  • K95.81 Infection due to other bariatric procedure

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.