ICD-10-CM Excludes1 Notes · Chapter 11 · FY 2027 K00-K95

Excludes1 Notes in Chapter 11: Diseases of the digestive system ICD-10-CM

An Excludes1 note means "NOT CODED HERE": the excluded code should never be reported together with the code above the note. In Chapter 11 (K00-K95), notes printed in the chapter name other codes 307 times, and Excludes1 Notes anywhere in the Tabular List name the chapter’s codes 222 times, covering 160 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

307

References in Its Notes

222

References to Its Codes

160

Chapter Codes Named

K00-K95

Chapter 11

Excludes1 Notes by the code that carries the note

130 of 130 shown

K00.0 Anodontia
- acquired absence of teeth (K08.1-)
K00.2 Abnormalities of size and form of teeth
- abnormalities of teeth due to congenital syphilis (A50.5)
K00.4 Disturbances in tooth formation
- Hutchinson's teeth and mulberry molars in congenital syphilis (A50.5)
K01 Embedded and impacted teeth applies to 2 codes
- abnormal position of fully erupted teeth (M26.3-)
K03.81 Cracked tooth
- broken or fractured tooth due to trauma (S02.5)
K04.4 Acute apical periodontitis of pulpal origin
- acute periodontitis (K05.2-)
K04.5 Chronic apical periodontitis
- chronic periodontitis (K05.3-)
K05.0 Acute gingivitis applies to 2 codes
- acute necrotizing ulcerative gingivitis (A69.1)
- herpesviral [herpes simplex] gingivostomatitis (B00.2)
K05.2 Aggressive periodontitis applies to 9 codes
- acute apical periodontitis (K04.4)
- periapical abscess (K04.7)
- periapical abscess with sinus (K04.6)
K05.3 Chronic periodontitis applies to 9 codes
- chronic apical periodontitis (K04.5)
K08.1 Complete loss of teeth applies to 25 codes
- congenital absence of teeth (K00.0)
- exfoliation of teeth due to systemic causes (K08.0)
- partial loss of teeth (K08.4-)
K08.4 Partial loss of teeth applies to 25 codes
- complete loss of teeth (K08.1-)
- congenital absence of teeth (K00.0)
K08.5 Unsatisfactory restoration of tooth applies to 10 codes
- dental restoration status (Z98.811)
K08.53 Fractured dental restorative material applies to 3 codes
- cracked tooth (K03.81)
- traumatic fracture of tooth (S02.5)
K11.2 Sialoadenitis applies to 4 codes
- epidemic parotitis (B26.-)
- mumps (B26.-)
- uveoparotid fever [Heerfordt] (D86.89)
K11.21 Acute sialoadenitis
- acute recurrent sialoadenitis (K11.22)
K11.4 Fistula of salivary gland
- congenital fistula of salivary gland (Q38.4)
K11.8 Other diseases of salivary glands
- Sjögren syndrome (M35.0-)
K12 Stomatitis and related lesions applies to 8 codes
- cancrum oris (A69.0)
- cheilitis (K13.0)
- gangrenous stomatitis (A69.0)
- herpesviral [herpes simplex] gingivostomatitis (B00.2)
- noma (A69.0)
K12.1 Other forms of stomatitis
- acute necrotizing ulcerative stomatitis (A69.1)
- Vincent's stomatitis (A69.1)
K13.0 Diseases of lips
- ariboflavinosis (E53.0)
- cheilitis due to radiation-related disorders (L55-L59)
- congenital fistula of lips (Q38.0)
- congenital hypertrophy of lips (Q18.6)
- Perlèche due to candidiasis (B37.83)
- Perlèche due to riboflavin deficiency (E53.0)
K13.2 Leukoplakia and other disturbances of oral epithelium, including tongue applies to 5 codes
- carcinoma in situ of oral epithelium (D00.0-)
- hairy leukoplakia (K13.3)
K13.21 Leukoplakia of oral mucosa, including tongue
- hairy leukoplakia (K13.3)
- leukokeratosis nicotina palati (K13.24)
K14.0 Glossitis
- atrophic glossitis (K14.4)
K14.5 Plicated tongue
- fissured tongue, congenital (Q38.3)
K20 Esophagitis applies to 5 codes
- erosion of esophagus (K22.1-)
- esophagitis with gastro-esophageal reflux disease (K21.0-)
- reflux esophagitis (K21.0-)
- ulcerative esophagitis (K22.1-)
K21 Gastro-esophageal reflux disease applies to 3 codes
- newborn esophageal reflux (P78.83)
K22.0 Achalasia of cardia
- congenital cardiospasm (Q39.5)
K22.1 Ulcer of esophagus applies to 2 codes
- Barrett's esophagus (K22.7-)
K22.2 Esophageal obstruction
- congenital stenosis or stricture of esophagus (Q39.3)
K22.3 Perforation of esophagus
- traumatic perforation of (thoracic) esophagus (S27.8-)
K22.4 Dyskinesia of esophagus
- cardiospasm (K22.0)
K22.5 Diverticulum of esophagus, acquired
- diverticulum of esophagus (congenital) (Q39.6)
K22.7 Barrett's esophagus applies to 4 codes
- Barrett's ulcer (K22.1)
- malignant neoplasm of esophagus (C15.-)
K22.81 Esophageal polyp
- benign neoplasm of esophagus (D13.0)
K22.82 Esophagogastric junction polyp
- benign neoplasm of stomach (D13.1)
K23 Disorders of esophagus in diseases classified elsewhere
- late syphilis (A52.79)
- megaesophagus due to Chagas' disease (B57.31)
- tuberculosis (A18.83)
K25 Gastric ulcer applies to 9 codes
- acute gastritis (K29.0-)
- peptic ulcer NOS (K27.-)
K26 Duodenal ulcer applies to 9 codes
- peptic ulcer NOS (K27.-)
K27 Peptic ulcer, site unspecified applies to 9 codes
- peptic ulcer of newborn (P78.82)
K28 Gastrojejunal ulcer applies to 9 codes
- primary ulcer of small intestine (K63.3)
K29 Gastritis and duodenitis applies to 18 codes
- eosinophilic gastritis or gastroenteritis (K52.81)
- Zollinger-Ellison syndrome (E16.4)
K29.0 Acute gastritis applies to 2 codes
- erosion (acute) of stomach (K25.-)
K30 Functional dyspepsia
- dyspepsia NOS (R10.13)
- heartburn (R12)
- nervous dyspepsia (F45.8)
- neurotic dyspepsia (F45.8)
- psychogenic dyspepsia (F45.8)
K31.1 Adult hypertrophic pyloric stenosis
- congenital pyloric stenosis (Q40.0)
K31.2 Hourglass stricture and stenosis of stomach
- congenital hourglass stomach (Q40.2)
- hourglass contraction of stomach (K31.89)
K31.3 Pylorospasm, not elsewhere classified
- congenital or infantile pylorospasm (Q40.0)
- neurotic pylorospasm (F45.8)
- psychogenic pylorospasm (F45.8)
K31.4 Gastric diverticulum
- congenital diverticulum of stomach (Q40.2)
K31.5 Obstruction of duodenum
- congenital stenosis of duodenum (Q41.0)
K31.7 Polyp of stomach and duodenum
- adenomatous polyp of stomach (D13.1)
K31.B Hypertrophic pyloric stenosis, in childhood
- congenital pyloric stenosis (Q40.0)
K37 Unspecified appendicitis
- unspecified appendicitis with peritonitis (K35.2-, K35.3-)
K42 Umbilical hernia applies to 3 codes
- omphalocele (Q79.2)
K44 Diaphragmatic hernia applies to 3 codes
- congenital diaphragmatic hernia (Q79.0)
- congenital hiatus hernia (Q40.1)
K46 Unspecified abdominal hernia applies to 3 codes
- vaginal enterocele (N81.5)
Block note Block K50-K52 Noninfective enteritis and colitis applies to 91 codes
- irritable bowel syndrome (K58.-)
- megacolon (K59.3-)
K50 Crohn's disease [regional enteritis] applies to 28 codes
- ulcerative colitis (K51.-)
K50.0 Crohn's disease of small intestine applies to 7 codes
- Crohn's disease of both small and large intestine (K50.8-)
K50.1 Crohn's disease of large intestine applies to 7 codes
- Crohn's disease of both small and large intestine (K50.8)
K51 Ulcerative colitis applies to 49 codes
- Crohn's disease [regional enteritis] (K50.-)
K52.3 Indeterminate colitis
- unspecified colitis (K52.9)
K52.9 Noninfective gastroenteritis and colitis, unspecified
- diarrhea NOS (R19.7)
- functional diarrhea (K59.1)
- infectious gastroenteritis and colitis NOS (A09)
- neonatal diarrhea (noninfective) (P78.3)
- psychogenic diarrhea (F45.8)
K55 Vascular disorders of intestine applies to 27 codes
- necrotizing enterocolitis of newborn (P77.-)
K55.3 Necrotizing enterocolitis applies to 4 codes
- necrotizing enterocolitis of newborn (P77.-)
K56 Paralytic ileus and intestinal obstruction without hernia applies to 16 codes
- congenital stricture or stenosis of intestine (Q41-Q42)
- cystic fibrosis with meconium ileus (E84.11)
- ischemic stricture of intestine (K55.1)
- meconium ileus NOS (P76.0)
- neonatal intestinal obstructions classifiable to P76.-
- obstruction of duodenum (K31.5)
- postprocedural intestinal obstruction (K91.3-)
K56.0 Paralytic ileus
- gallstone ileus (K56.3)
- ileus NOS (K56.7)
- obstructive ileus NOS (K56.69-)
K56.7 Ileus, unspecified
- obstructive ileus (K56.69-)
K57 Diverticular disease of intestine applies to 24 codes
- congenital diverticulum of intestine (Q43.8)
- Meckel's diverticulum (Q43.0)
K57.0 Diverticulitis of small intestine with perforation and abscess applies to 2 codes
- diverticulitis of both small and large intestine with perforation and abscess (K57.4-)
K57.1 Diverticular disease of small intestine without perforation or abscess applies to 4 codes
- diverticular disease of both small and large intestine without perforation or abscess (K57.5-)
K57.2 Diverticulitis of large intestine with perforation and abscess applies to 2 codes
- diverticulitis of both small and large intestine with perforation and abscess (K57.4-)
K57.3 Diverticular disease of large intestine without perforation or abscess applies to 4 codes
- diverticular disease of both small and large intestine without perforation or abscess (K57.5-)
K59 Other functional intestinal disorders applies to 14 codes
- change in bowel habit NOS (R19.4)
- intestinal malabsorption (K90.-)
- psychogenic intestinal disorders (F45.8)
K59.0 Constipation applies to 6 codes
- fecal impaction (K56.41)
K59.1 Functional diarrhea
- diarrhea NOS (R19.7)
- irritable bowel syndrome with diarrhea (K58.0)
K59.3 Megacolon, not elsewhere classified applies to 2 codes
- congenital megacolon (aganglionic) (Q43.1)
- megacolon (due to) (in) Chagas' disease (B57.32)
- megacolon (due to) (in) Clostridium difficile (A04.7-)
- megacolon (due to) (in) Hirschsprung's disease (Q43.1)
K60.3 Anal fistula applies to 9 codes
- congenital fistula (Q43.6)
K60.4 Rectal fistula applies to 9 codes
- congenital fistula (Q43.6)
- rectovaginal fistula (N82.3)
- vesicorectal fistual (N32.1)
K60.5 Anorectal fistula applies to 9 codes
- congenital fistula (Q43.6)
K61.1 Rectal abscess
- ischiorectal abscess (K61.39)
K62.1 Rectal polyp
- adenomatous polyp (D12.8)
K62.5 Hemorrhage of anus and rectum
- gastrointestinal bleeding NOS (K92.2)
- melena (K92.1)
- neonatal rectal hemorrhage (P54.2)
K62.6 Ulcer of anus and rectum
- fissure and fistula of anus and rectum (K60.-)
- ulcerative colitis (K51.-)
K62.82 Dysplasia of anus
- abnormal results from anal cytologic examination without histologic confirmation (R85.61-)
- anal intraepithelial neoplasia III (D01.3)
- carcinoma in situ of anus (D01.3)
- HGSIL of anus (R85.613)
- severe dysplasia of anus (D01.3)
K63.0 Abscess of intestine
- abscess of intestine with Crohn's disease (K50.014, K50.114, K50.814, K50.914,)
- abscess of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)
- abscess of intestine with ulcerative colitis (K51.014, K51.214, K51.314, K51.414, K51.514, K51.814, K51.914)
K63.1 Perforation of intestine (nontraumatic)
- perforation (nontraumatic) of duodenum (K26.-)
- perforation (nontraumatic) of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)
K63.2 Fistula of intestine
- fistula of duodenum (K31.6)
- fistula of intestine with Crohn's disease (K50.013, K50.113, K50.813, K50.913,)
- fistula of intestine with ulcerative colitis (K51.013, K51.213, K51.313, K51.413, K51.513, K51.813, K51.913)
K63.3 Ulcer of intestine
- duodenal ulcer (K26.-)
- gastrointestinal ulcer (K28.-)
- gastrojejunal ulcer (K28.-)
- jejunal ulcer (K28.-)
- peptic ulcer, site unspecified (K27.-)
- ulcer of intestine with perforation (K63.1)
- ulcer of anus or rectum (K62.6)
- ulcerative colitis (K51.-)
K64 Hemorrhoids and perianal venous thrombosis applies to 8 codes
- hemorrhoids complicating childbirth and the puerperium (O87.2)
- hemorrhoids complicating pregnancy (O22.4)
K65 Peritonitis applies to 7 codes
- acute appendicitis with generalized peritonitis (K35.2-)
- aseptic peritonitis (T81.6)
- benign paroxysmal peritonitis (E85.0)
- chemical peritonitis (T81.6)
- gonococcal peritonitis (A54.85)
- neonatal peritonitis (P78.0-P78.1)
- pelvic peritonitis, female (N73.3-N73.5)
- periodic familial peritonitis (E85.0)
- peritonitis due to talc or other foreign substance (T81.6)
- peritonitis in chlamydia (A74.81)
- peritonitis in diphtheria (A36.89)
- peritonitis in syphilis (late) (A52.74)
- peritonitis in tuberculosis (A18.31)
- peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0)
- peritonitis with or following appendicitis (K35.-)
- puerperal peritonitis (O85)
- retroperitoneal infections (K68.-)
K65.2 Spontaneous bacterial peritonitis
- bacterial peritonitis NOS (K65.9)
K66.0 Peritoneal adhesions (postprocedural) (postinfection)
- peritoneal adhesions with intestinal obstruction (K56.5-)
K66.1 Hemoperitoneum
- traumatic hemoperitoneum (S36.8-)
K67 Disorders of peritoneum in infectious diseases classified elsewhere
- peritonitis in chlamydia (A74.81)
- peritonitis in diphtheria (A36.89)
- peritonitis in gonococcal (A54.85)
- peritonitis in syphilis (late) (A52.74)
- peritonitis in tuberculosis (A18.31)
Block note Block K70-K77 Diseases of liver applies to 65 codes
- jaundice NOS (R17)
K72 Hepatic failure, not elsewhere classified applies to 6 codes
- alcoholic hepatic failure (K70.4)
- hepatic failure with toxic liver disease (K71.1-)
- icterus of newborn (P55-P59)
- postprocedural hepatic failure (K91.82)
K73 Chronic hepatitis, not elsewhere classified applies to 5 codes
- alcoholic hepatitis (chronic) (K70.1-)
- drug-induced hepatitis (chronic) (K71.-)
- granulomatous hepatitis (chronic) NEC (K75.3)
- reactive, nonspecific hepatitis (chronic) (K75.2)
- viral hepatitis (chronic) (B15-B19)
K74 Fibrosis and cirrhosis of liver applies to 11 codes
- alcoholic cirrhosis (of liver) (K70.3)
- alcoholic fibrosis of liver (K70.2)
- cardiac sclerosis of liver (K76.1)
- cirrhosis (of liver) with toxic liver disease (K71.7)
- congenital cirrhosis (of liver) (P78.81)
- pigmentary cirrhosis (of liver) (E83.110)
K74.02 Hepatic fibrosis, advanced fibrosis
- cirrhosis of liver (K74.6-)
- hepatic fibrosis, stage F4 (K74.6-)
K75.0 Abscess of liver
- amebic liver abscess (A06.4)
- cholangitis without liver abscess (K83.09)
- pylephlebitis without liver abscess (K75.1)
K75.1 Phlebitis of portal vein
- pylephlebitic liver abscess (K75.0)
K75.2 Nonspecific reactive hepatitis
- acute or subacute hepatitis (K72.0-)
- chronic hepatitis NEC (K73.-)
- viral hepatitis (B15-B19)
K75.3 Granulomatous hepatitis, not elsewhere classified
- acute or subacute hepatitis (K72.0-)
- chronic hepatitis NEC (K73.-)
- viral hepatitis (B15-B19)
K75.9 Inflammatory liver disease, unspecified
- acute or subacute hepatitis (K72.0-)
- chronic hepatitis NEC (K73.-)
- viral hepatitis (B15-B19)
K76.0 Fatty (change of) liver, not elsewhere classified
- nonalcoholic steatohepatitis (NASH) (K75.81)
K76.2 Central hemorrhagic necrosis of liver
- liver necrosis with hepatic failure (K72.-)
K76.5 Hepatic veno-occlusive disease
- Budd-Chiari syndrome (I82.0)
K76.7 Hepatorenal syndrome
- hepatorenal syndrome following labor and delivery (O90.41)
- postprocedural hepatorenal syndrome (K91.83)
K76.82 Hepatic encephalopathy
- acute and subacute hepatic failure with coma (K72.01)
- alcoholic hepatic failure with coma (K70.41)
- chronic hepatic failure with coma (K72.11)
- hepatic failure with coma (K72.91)
K76.83 Intestinal failure-associated liver disease
- intestinal failure (K90.83)
K77 Liver disorders in diseases classified elsewhere
- alcoholic hepatitis (K70.1-)
- alcoholic liver disease (K70.-)
- cytomegaloviral hepatitis (B25.1)
- herpesviral [herpes simplex] hepatitis (B00.81)
- mumps hepatitis (B26.81)
- sarcoidosis with liver disease (D86.89)
- secondary syphilis with liver disease (A51.45)
- syphilis (late) with liver disease (A52.74)
- toxoplasmosis (acquired) hepatitis (B58.1)
- tuberculosis with liver disease (A18.83)
K80 Cholelithiasis applies to 40 codes
- retained cholelithiasis following cholecystectomy (K91.86)
K81 Cholecystitis applies to 4 codes
- cholecystitis with cholelithiasis (K80.-)
K82 Other diseases of gallbladder applies to 9 codes
- nonvisualization of gallbladder (R93.2)
- postcholecystectomy syndrome (K91.5)
K82.0 Obstruction of gallbladder
- obstruction of gallbladder with cholelithiasis (K80.-)
K82.2 Perforation of gallbladder
- Perforation of gallbladder in cholecystitis (K82.A2)
K82.4 Cholesterolosis of gallbladder
- cholesterolosis of gallbladder with cholecystitis (K81.-)
- cholesterolosis of gallbladder with cholelithiasis (K80.-)
K83 Other diseases of biliary tract applies to 9 codes
- postcholecystectomy syndrome (K91.5)
K83.0 Cholangitis applies to 2 codes
- cholangitic liver abscess (K75.0)
- cholangitis with choledocholithiasis (K80.3-, K80.4-)
K83.1 Obstruction of bile duct
- congenital obstruction of bile duct (Q44.3)
- obstruction of bile duct with cholelithiasis (K80.-)
K87 Disorders of gallbladder, biliary tract and pancreas in diseases classified elsewhere
- cytomegaloviral pancreatitis (B25.2)
- mumps pancreatitis (B26.3)
- syphilitic gallbladder (A52.74)
- syphilitic pancreas (A52.74)
- tuberculosis of gallbladder (A18.83)
- tuberculosis of pancreas (A18.83)
K90 Intestinal malabsorption applies to 13 codes
- intestinal malabsorption following gastrointestinal surgery (K91.2)
K90.2 Blind loop syndrome, not elsewhere classified
- congenital blind loop syndrome (Q43.8)
- postsurgical blind loop syndrome (K91.2)
K90.82 Short bowel syndrome applies to 3 codes
- postsurgical malabsorption, not elsewhere classified (K91.2)
K91.2 Postsurgical malabsorption, not elsewhere classified
- malabsorption osteomalacia in adults (M83.2)
- malabsorption osteoporosis, postsurgical (M80.8-, M81.8)
K91.6 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure applies to 2 codes
- intraoperative hemorrhage and hematoma of a digestive system organ or structure due to accidental puncture and laceration during a procedure (K91.7-)
K92 Other diseases of digestive system applies to 6 codes
- neonatal gastrointestinal hemorrhage (P54.0-P54.3)
K92.1 Melena
- occult blood in feces (R19.5)
K92.2 Gastrointestinal hemorrhage, unspecified
- acute hemorrhagic gastritis (K29.01)
- hemorrhage of anus and rectum (K62.5)
- angiodysplasia of stomach with hemorrhage (K31.811)
- diverticular disease with hemorrhage (K57.-)
- gastritis and duodenitis with hemorrhage (K29.-)
- peptic ulcer with hemorrhage (K25-K28)
K95.8 Complications of other bariatric procedure applies to 2 codes
- complications of gastric band surgery (K95.0-)

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 Excludes1 Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Excludes1 Notes

What does an Excludes1 note mean?

An Excludes1 note means “NOT CODED HERE!”: the excluded code should never be used at the same time as the code above the note. It is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition (Section I.A.12.a). The FY 2027 Tabular List has 5,411 of them; 5,284 name other codes, with 5,710 references to 3,528 distinct codes, categories and ranges.

Is there any exception to an Excludes1 note?

Yes: when the two conditions are unrelated to each other. The Guidelines’ example is F45.8, whose Excludes1 note names sleep related teeth grinding (G47.63). A patient with psychogenic dysmenorrhea (an inclusion term of F45.8) and teeth grinding may have both codes reported. If it is not clear whether the conditions are related, query the provider.

Related References

ICD-10-CM Official Guidelines ICD-10-CM Code Lookup ICD-10-CM Codes List Code 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.