Gastroenterology 

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Gastroenterology

General Documentation Considerations

ICD-10-CM includes changes in terminology use:

Diagnoses

ICD-9 to ICD-10 Crosswalk

The codes in these crosswalks were selected based on the most commonly used ICD-9 codes according to historical MedStar Health coding data and from professional coding associations, and are ordered by frequency of use. 

Not all the codes you need are contained in this list. For a comprehensive list of ICD-10 codes, use Diagnosis Assistant or the IMO Anywhere tool.

Code Description (ICD-9 codes are in blue)
V76.51 Special screening for malignant neoplasms, colon 
Z12.11 Encounter for screening for malignant neoplasm of colon
211.3 Benign neoplasm colon
D12.6 Benign neoplasm of colon, unspecified
D12.0 Benign neoplasm of cecum
D12.1
Benign neoplasm of appendix
D12.2
Benign neoplasm of ascending colon
D12.3
Benign neoplasm of transverse colon
D12.4
Benign neoplasm of descending colon
D12.5
Benign neoplasm of sigmoid colon
789.00 Abdominal pain, unspecified site
R10.9 Unspecified abdominal pain
R10.0 Acute abdomen
R10.10
Upper abdominal pain, unspecified
R10.11
Right upper quadrant pain
R10.12
Left upper quadrant pain
R10.13
Epigastric pain
R10.2
Pelvic and perineal pain
R10.30
Lower abdominal pain, unspecified
R10.31
Right lower quadrant pain
R10.32
Left lower quadrant pain
R10.33
Periumbilical pain
R10.84
Generalized abdominal pain
V16.0 Family history of malignant neoplasm of gastrointestinal tract
Z80.0 Family history of primary malignant neoplasm of digestive organs
787.20 Dysphagia, unspecified
R13.0 Aphagia
R13.10 Dysphagia

** Code first, if applicable, dysphagia following cerebrovascular disease (169. with final characters ·91)
V12.72 Personal history of colonic polyps
Z86.010 Personal history of colonic polyps
562.10 Diverticulosis of colon (without hemorrhage)
K57.30 Diverticulosis of large intestine without perforation or abscess without bleeding
530.81 Esophageal reflux
K21.9 Gastro-esophageal reflux without esophagitis
K21.0 Gastro-esophageal reflux with esophagitis
787.91 Diarrhea
R19.7 Diarrhea, unspecified
530.85 Barrett's esophagus
K22.70 Barrett's esophagus without dysplasia
K22.710 Barrett's esophagus with low grade dysplasia
K22.711
Barrett's esophagus with high grade dysplasia
K22.719
Barrett's esophagus with dysplasia, unspecified
578.9 Hemorrhage of gastrointestinal tract, unspecified 
K92.2 Gastrointestinal hemorrhage, unspecified 
793.4 Nonspecific (abnormal) findings on radiologic and other examination of gastrointestinal tract
R93.3 Abnormal findings on diagnostic image of other parts of digestive tract
211.4 Benign neoplasm of rectum and anal canal
D12.7 Benign neoplasm of rectosigmoid junction
D12.8 Benign neoplasm of rectum
D12.9
Benign neoplasm of anus and anal canal
574.50 Calculus of bile duct without cholecystitis without obstruction
K80.50 Calculus of bile duct without cholangitis or cholecystitis without obstruction
535.10 Atrophic gastritis (without hemorrhage)
K29.40 Chronic atrophic gastritis without bleeding
555.9 Regional enteritis of unspecified site
K50.90 Crohn's disease, unspecified, without complications

** Use additional code to identify manifestations, such as: pyoderma gangrenosum (L88)
K50.00
Crohn's disease of small intestine without complications
K50.011
Crohn's disease of small intestine with rectal bleeding
K50.012
Crohn's disease of small intestine with intestinal obstruction
K50.013
Crohn's disease of small intestine with fistula
K50.014
Crohn's disease of small intestine with abscess
K50.018
Crohn's disease of small intestine with other complication
K50.019
Crohn's disease of small intestine with unspecified complications
K50.10
Crohn's disease of large intestine without complications
K50.111
Crohn's disease of large intestine with rectal bleeding
K50.112
Crohn's disease of large intestine with intestinal obsrruaion
K50.113
Crohn's disease of large intestine with fistula
K50.114
Crohn's disease of large intestine with abscess
K50.118
Crohn's disease of large intestine with other complication
K50.119
Crohn's disease of large intestine with unspecified complications
K50.80
Crohn's disease of both small and large intestine with· out complications
K50.811
Crohn's disease of both small and large intestine with rectal bleeding
K50.812
Crohn's disease of both small and large intestine with intestinal obstruction
K50.813
Crohn's disease of both small and large intestine with fistula
K50.814
Crohn's disease of both small and large intestine with abscess
K50.818
Crohn's disease of both small and large intestine with other complication
K50.819
Crohn's disease of both small and large intestine with unspecified complications
KS0.911
Crohn's disease, unspecified, with rectal bleeding
KS0.912
Crohn's disease, unspecified, with intestinal obstruction
KS0.913
Crohn's disease, unspecified, with fistula
KS0.914
Crohn's disease, unspecified, with abscess
K50.918
Crohn's disease, unspecified, with other complication
K50.919
Crohn's disease, unspedfied, with unspecified complications
285.9 Anemia unspecified
D64.9 Anemia, unspecified
D64.81 Anemia due to antineoplastic chemotherapy
D64.89
Other specified anemias
790.4 Nonsepecific elevation of levels of transaminase or lactic acid dehydrogenase (LDHJ)
R74.0 Nonsepecific elevation of levels of transaminase and lactic acid dehydrogenase (LDHJ)
456.1 Esophageal varices without bleeding
I85.00 Esophageal varices without bleeding
564.00 Constipation, unspecified
K59.00 Constipation, unspecified
K59.01 Slow transit constipation
K59.02
Outlet dysfunction constipation
K59.09
Other constipation
530.3 Stricture and stenosis of esophagus
K22.2 Esophageal obstruction
553.3 Diaphragmatic hernia without obstruction or gangrene
K44.9 Diaphragmatic hernia without obstruction or gangrene
787.99 Other symptoms involving digestive system
R19.8 Other specified symptoms and signs involving the digestive system and abdomen
571.5 Cirrhosis of liver without alcohol
K74.60 Unspecified cirrhosis of liver
K74.69 Other cirrhosis of liver

** Code also, if applicable, viral hepatitis (acute) (chronic) (B15-B19)
558.9 Other and unspecified noninfectious gastroenteritis and colitis
K52.89 Other specified noninfective gastroenteritis and colitis
K52.9 Noninfective gastroenteritis and colitis, unspecified 
455.0 Internal hemorrhoids without complication
K64.0 Hemorrhoids, 1st degree (grade/stage I)
K64.1 Hemorrhoids 2nd degree (grade/stage II)
K64.2
Hemorrhoids 3rd degree (grade/stage Ill)
K64.3
Hemorrhoids 4th degree (grade/stage IV)
K64.8
Hemorrhoids, other (without mention of degree)
K64.9
Hemorrhoids, unspecified (without mention of degree)
569.3 Hemorrhage of rectum and anus
K62.5 Hemorrhage of anus and rectum
556.8 Other ulcerative colitis
K51.80 Other ulcerative colitis without complications
K51.811 Other ulcerative colitis with rectal bleeding
K51.812
Other ulcerative colitis with intestinal obstruction
K51.813
Other ulcerative colitis with fistula
K51.814
Other ulcerative colitis with abscess
K51.818
Other ulcerative colitis with other complication
K51.819
Other ulcerative colitis with unspecified complications

** Use additional code to identify manifestations, such as: pyoderma gangrenosum (L88)
536.8 Dyspepsia and other specified disorders of function of stomach
R10.13 Epigastric pain (dyspepsia)
K30 Functional dyspepsia
K31.0 
Acute dilatation of stomach
K31.1
Adult hypertrophic pyloric stenosis
K31.2
Hourglass stricture and stenosis of stomach
K31.3
Pylorospasm, not elsewhere classified
K31.4
Gastric diverticulum
K31.5
Obstruction of duodenum
K31.6
Fistula of stomach and duodenum
K31.7
Polyp of stomach and duodenum
K31.811
Angiodysplasia of stomach and duodenum with bleeding
K31.819
Angiodysplasia of stomach and duodenum without bleeding
K31.82
Dieulafoy lesion (hemorrhagic) of stomach and duodenum
K31.83
Achlorhydria
K31.84
Gastroparesis
K31.89
Other disorders of stomach and duodenum
280.9 Iron deficiency anemia unspecified
D50.9 Iron deficiency anemia, unspecified
D50.0 Iron deficiency anemia secondary to blood loss (chronic)
D50.1
Sideropenic dysphagia
D50.8
Other iron deficiency anemias
530.10 Esophagitis unspecified
K20.9 Esophagitis, unspecified
K20.0 Eosinophilic esophagitis
K20.8 Eosinophilic esophagitis

** Use additional code to identify: Alcohol abuse and dependence (F1O-)
789.06 Abdominal pain, epigastric
R10.13 Epigastric pain
070.54 Chronic hepatitis C without hepatic coma
B18.2 Chronic viral hepatitis C
211.1 Benign neoplasm of stomach
D13.1 Benign neoplasm of stomach
556.9 Ulcerative colitis unspecified
K51.90 Ulcerative colitis, unspecified, without complications
K51.00 Ulcerative (chronic) pancolitis without complications
K51.011
Ulcerative (chronic) pancolitis with rectal bleeding
K51.012
Ulcerative (chronic) pancolitis with intestinal obstruction
K51.013
Ulcerative (chronic) pancolitis with fistula
K51.014
Ulcerative (chronic) pancolitis with abscess
K51.018
Ulcerative (chronic) pancolitis with other complication
K51.019
Ulcerative (chronic) pancolitis with unspecified complications
K51.20
Ulcerative (chronic) proctitis without complications
K51.211
Ulcerative (chronic) proctitis with rectal bleeding
K51.212
Ulcerative (chronic) proctitis with intestinal obstruction
K51.213
Ulcerative (chronic) proctitis with fistula
K51.214
Ulcerative (chronic) proctitis with abscess
K51.218
Ulcerative (chronic) proctitis with other complication
K51.219
Ulcerative (chronic) proaitis with unspecified complications
K51.30
Ulcerative (chronic) rectosigmoiditis without complications
K51.311
Ulcerative (chronic) rectosigmoiditis with rectal bleeding
K51.312
Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
K51.313
Ulcerative (chronic) rectosigmoiditis with fistula
K51.314
Ulcerative (chronic) rectosigmoiditis with abscess
K51.318
Ulcerative (chronic) rectosigmoiditis with other complication
K51.319
Ulcerative (chronic) rectosigmoiditis with unspecified complications
K51.40
Inflammatory polyps of colon without complications
K51.411
Inflammatory polyps of colon with rectal bleeding
K51.412
Inflammatory polyps of colon with intestinal obstruction
K51.413
Inflammatory polyps of colon with fistula
K51.414
Inflammatory polyps of colon with abscess
K51.418
Inflammatory polyps of colon with other complication
K51.419
Inflammatory polyps of colon with unspecified complications
K51.50
Left sided colitis without complications
K51.511
Left sided colitis with rectal bleeding
K51.512
Left sided colitis with intestinal obstruction
K51.513
Left sided colitis with fistula
K51.514
Left sided colitis with abscess
K51.518
Left sided colitis with other complication
K51.519
Left sided colitis with unspecified complications
K51.80
Other ulcerative colitis without complications
K51.811
Other ulcerative colitis with rectal bleeding
K51.812
Other ulcerative colitis with intestinal obstruction
K51.813
Other ulcerative colitis with fistula
K51.814
Other ulcerative colitis with abscess
K51.818
Other ulcerative colitis with other complication
K51.819
Other ulcerative colitis with unspecified complications
K51.911
Ulcerative colitis, unspecified with rectal bleeding
K51.912
Ulcerative colitis, unspecified with intestinal obstruction
K51.913
Ulcerative colitis, unspecified with fistula
K51.914
Ulcerative colitis, unspecified with abscess
K51.918
Ulcerative colitis, unspecified with other complication
K51.919
Ulcerative colitis, unspecified with unspecified complications

** Use additional code to identify manifestations, such as: Pyoderma gangrenosum (L88)
571.2 Alcoholic cirrhosis of liver
K70.30 Alcoholic cirrhosis of liver without ascites
K70.31 Alcoholic cirrhosis of liver with ascites

** Use additional code to identify: alcohol abuse and dependence (FlO-)
578.1 Blood in stool
K92.1 Melena
R19.5 Other fecal abnormalities
150.9 Malignant neoplasm of esophagus unspecified site
C15.9 Malignant neoplasm of esophagus, unspecified
C15.3 Malignant neoplasm of upper third of esophagus
C15.4
Malignant neoplasm of middle third of esophagus
C15.5
Malignant neoplasm of lower third of esophagus
C15.8
Malignant neoplasm of overlapping sites of esophagus

** Use additional code to identify: alcohol abuse and dependence (Fl 0-)
786.50 Chest pain, unspecified
R07.9 Chest pain, unspecified
R07.1 Chest pain on breathing
R07.81
Pleurodynia
R07.89
Other chest pain
V12.79 Personal history of other specified digestive system diseases
Z87.19 Personal history of other diseases of the digestive system

** Code first any follow-up examination after treatment (Z09)
577.2 Cyst and pseudocyst of pancreas
K86.2 Cyst of pancreas
K86.3 Pseudocyst of pancreas
531.90 Gastric ulcer unspecified as acute or chronic without hemorrhage or perforation without obstruction
K25.9 Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
569.89 Other specified disorders of intestines
K63.89 Other specified diseases of intestine
K63.0 Abscess of intestine
K63.1
Perforation of intestine (nontraumatic)
K63.2
Fistula of intestine
K63.3
Ulcer of intestine
K63.4
Enteroptosis
K63.5
Polyp of colon
K63.81
Dieulafoy lesion of intestine
564.1 Irritable bowel syndrome
K58.0 Irritable bowel syndrome with diarrhea
K58.9
Irritable bowel syndrome without diarrhea
V18.51 Family history, colonic polyps
Z83.71 Family history of colonic polyps
576.2 Obstruction of bile duct
K83.1 Obstruction of bile duct
935.1 Foreign body in esophagus

The appropriate 7th character is to be added to each code from category T18:
A initial
D subsequent
S sequela

These codes  require one of the 7th character extenders listed above
T18.100- 
Unspecified foreign body in esophagus causing compression of trachea
T18.108-
Unspecified foreign body in esophagus causing other injury
T18.110
Gastric contents in esophagus causing compression of trachea
T18.118-
Gastric contents in esophagus causing other injury
T18.120-
Food in esophagus causing compression of trachea
T18.128-
Food in esophagus causing other injury
T18.190-
Other foreign body in esophagus causing compression of trachea
T18.198-
Other foreign body in esophagus causing other injury
530.11 Reflux esophagitis
K21.0 Gastro-esophageal reflux disease with esophagitis
K21.9 Gastro-esophageal reflux disease without esophagitis
794.8 Nonspecific abnormal results of function study of liver
R94.5 Abnormal results of function studies of other organs and systems
V10.05 Personal history of malignant neoplasm of large intestine
Z85.030 Personal history of malignant carcinoid tumor of large intestine
Z85.038 Personal history of other malignant neoplasm of large intestine