Coding: ICD-10-CM Section R10-R19

ICD-10-CM Book 2026 Edition

Symptoms and signs involving the digestive system and abdomen (R10-R19)

Excludes2:

congenital or infantile pylorospasm (Q40.0)
gastrointestinal hemorrhage (K92.0-K92.2)
intestinal obstruction (K56.-)
newborn gastrointestinal hemorrhage (P54.0-P54.3)
newborn intestinal obstruction (P76.-)
pylorospasm (K31.3)
signs and symptoms involving the urinary system (R30-R39)
symptoms referable to female genital organs (N94.-)
symptoms referable to male genital organs (N48-N50)

R10

Abdominal and pelvic pain

Excludes1	renal colic (N23)
Excludes2	costovertebral (angle) tenderness (R39.85) dorsalgia (M54.-) flatulence and related conditions (R14.-)

R10.0

Acute abdomen

Severe abdominal pain (generalized) (with abdominal rigidity)
Excludes1	abdominal rigidity NOS (R19.3) generalized abdominal pain NOS (R10.84) localized abdominal pain (R10.1-R10.3-)

R10.1

Pain localized to upper abdomen

Excludes2

pain localized to flank (R10.A-)
pelvic and perineal pain (R10.2-)

R10.10

Upper abdominal pain, unspecified

R10.11

Right upper quadrant pain

R10.12

Left upper quadrant pain

R10.13

Epigastric pain

Dyspepsia
Excludes1	functional dyspepsia (K30)

R10.2

Pelvic and perineal pain

Excludes1	vulvodynia (N94.81)
Excludes2	pain localized to other parts of lower abdomen (R10.3-) pain localized to upper abdomen (R10.1-)

R10.20

Pelvic and perineal pain unspecified side

R10.21

Pelvic and perineal pain right side

R10.22

Pelvic and perineal pain left side

R10.23

Pelvic and perineal pain bilateral

R10.24

Suprapubic pain

R10.3

Pain localized to other parts of lower abdomen

Excludes2

pain localized to flank (R10.A-)
pelvic and perineal pain (R10.2-)

R10.30

Lower abdominal pain, unspecified

R10.31

Right lower quadrant pain

R10.32

Left lower quadrant pain

R10.33

Periumbilical pain

R10.8

Other abdominal pain

R10.81

Abdominal tenderness

Abdominal tenderness NOS
Excludes2	pain localized to other parts of lower abdomen (R10.3-) pain localized to upper abdomen (R10.1-)

R10.811

Right upper quadrant abdominal tenderness

R10.812

Left upper quadrant abdominal tenderness

R10.813

Right lower quadrant abdominal tenderness

R10.814

Left lower quadrant abdominal tenderness

R10.815

Periumbilic abdominal tenderness

R10.816

Epigastric abdominal tenderness

R10.817

Generalized abdominal tenderness

R10.819

Abdominal tenderness, unspecified site

R10.82

Rebound abdominal tenderness

Excludes2

pain localized to other parts of lower abdomen (R10.3-)
pain localized to upper abdomen (R10.1-)

R10.821

Right upper quadrant rebound abdominal tenderness

R10.822

Left upper quadrant rebound abdominal tenderness

R10.823

Right lower quadrant rebound abdominal tenderness

R10.824

Left lower quadrant rebound abdominal tenderness

R10.825

Periumbilic rebound abdominal tenderness

R10.826

Epigastric rebound abdominal tenderness

R10.827

Generalized rebound abdominal tenderness

R10.829

Rebound abdominal tenderness, unspecified site

R10.83

Colic

Colic NOS
Infantile colic
Excludes1	colic in adult and child over 12 months old (R10.84)
age	Pediatric: [0-17]

R10.84

Generalized abdominal pain

Excludes1

generalized abdominal pain associated with acute abdomen (R10.0)

R10.85

Abdominal pain of multiple sites

Excludes1

abdominal rigidity NOS (R19.3)
generalized abdominal pain associated with acute abdomen (R10.0)
generalized abdominal pain NOS (R10.84)
localized abdominal pain (R10.1-R10.4-)

R10.8A

Flank tenderness

R10.8A1

Right flank tenderness

R10.8A2

Left flank tenderness

R10.8A3

Suprapubic tenderness

R10.8A9

Flank tenderness, unspecified

Flank tenderness NOS

R10.9

Unspecified abdominal pain

R10.A

Pain localized to flank

Lateral abdomen pain
Lateral flank pain
Latus region pain
Excludes2	pain localized to other parts of lower abdomen (R10.3-) pain localized to upper abdomen (R10.1-)

R10.A0

Flank pain, unspecified side

R10.A1

Flank pain, right side

R10.A2

Flank pain, left side

R10.A3

Flank pain, bilateral

R11

Nausea and vomiting

Excludes1

cyclical vomiting associated with migraine (G43.A-)
excessive vomiting in pregnancy (O21.-)
hematemesis (K92.0)
neonatal hematemesis (P54.0)
newborn vomiting (P92.0-)
psychogenic vomiting (F50.89)
vomiting associated with bulimia nervosa (F50.2-)
vomiting following gastrointestinal surgery (K91.0)

R11.0

Nausea

Nausea NOS

Nausea without vomiting

R11.1

Vomiting

R11.10

Vomiting, unspecified

Vomiting NOS

R11.11

Vomiting without nausea

R11.12

Projectile vomiting

R11.13

Vomiting of fecal matter

R11.14

Bilious vomiting

Bilious emesis

R11.15

Cyclical vomiting syndrome unrelated to migraine

Cyclic vomiting syndrome NOS
Persistent vomiting
Excludes1	cyclical vomiting in migraine (G43.A-)
Excludes2	bulimia nervosa (F50.20) diabetes mellitus due to underlying condition (E08.-)

R11.16

Cannabis hyperemesis syndrome

Cannabinoid hyperemesis syndrome
CodeAlso	cannabis abuse (F12.1-) cannabis dependence (F12.2-) cannabis use, unspecified (F12.92-, F12.93, F12.95-, F12.98-, F12.99) manifestations, such as: dehydration (E86.0) electrolyte imbalance (E87.8}

R11.2

Nausea with vomiting, unspecified

Persistent nausea with vomiting NOS

R12

Heartburn

Excludes1

dyspepsia NOS (R10.13)
functional dyspepsia (K30)

R13

Aphagia and dysphagia

R13.0

Aphagia

Inability to swallow
Excludes1	psychogenic aphagia (F50.9)

R13.1

Dysphagia

CodeFirst	, if applicable, dysphagia following cerebrovascular disease (I69. with final characters -91)
Excludes1	psychogenic dysphagia (F45.8)

R13.10

Dysphagia, unspecified

Difficulty in swallowing NOS

R13.11

Dysphagia, oral phase

R13.12

Dysphagia, oropharyngeal phase

R13.13

Dysphagia, pharyngeal phase

R13.14

Dysphagia, pharyngoesophageal phase

R13.19

Other dysphagia

Cervical dysphagia

Neurogenic dysphagia

R14

Flatulence and related conditions

Excludes1

psychogenic aerophagy (F45.8)

R14.0

Abdominal distension (gaseous)

Bloating

Tympanites (abdominal) (intestinal)

R14.1

Gas pain

R14.2

Eructation

R14.3

Flatulence

R15

Fecal incontinence

Includes	encopresis NOS
Excludes1	fecal incontinence of nonorganic origin (F98.1)

R15.0

Incomplete defecation

Excludes2

constipation (K59.0-)
fecal impaction (K56.41)

R15.1

Fecal smearing

Fecal soiling

R15.2

Fecal urgency

R15.9

Full incontinence of feces

Fecal incontinence NOS

R16

Hepatomegaly and splenomegaly, not elsewhere classified

R16.0

Hepatomegaly, not elsewhere classified

Hepatomegaly NOS

R16.1

Splenomegaly, not elsewhere classified

Splenomegaly NOS

R16.2

Hepatomegaly with splenomegaly, not elsewhere classified

Hepatosplenomegaly NOS

R17

Unspecified jaundice

Excludes1

neonatal jaundice (P55, P57-P59)

R18

Ascites

Includes	fluid in peritoneal cavity
Excludes1	ascites in alcoholic cirrhosis (K70.31) ascites in alcoholic hepatitis (K70.11) ascites in toxic liver disease with chronic active hepatitis (K71.51)

R18.0

Malignant ascites

CodeFirst	malignancy, such as: malignant neoplasm of ovary (C56.-) secondary malignant neoplasm of retroperitoneum and peritoneum (C78.6)
nonPrimary	Yes

R18.8

Other ascites

Ascites NOS

Peritoneal effusion (chronic)

R19

Other symptoms and signs involving the digestive system and abdomen

Excludes1

acute abdomen (R10.0)

R19.0

Intra-abdominal and pelvic swelling, mass and lump

Excludes1

abdominal distension (gaseous) (R14.-)
ascites (R18.-)

R19.00

Intra-abdominal and pelvic swelling, mass and lump, unspecified site

R19.01

Right upper quadrant abdominal swelling, mass and lump

R19.02

Left upper quadrant abdominal swelling, mass and lump

R19.03

Right lower quadrant abdominal swelling, mass and lump

R19.04

Left lower quadrant abdominal swelling, mass and lump

R19.05

Periumbilic swelling, mass or lump

Diffuse or generalized umbilical swelling or mass

R19.06

Epigastric swelling, mass or lump

R19.07

Generalized intra-abdominal and pelvic swelling, mass and lump

Diffuse or generalized intra-abdominal swelling or mass NOS

Diffuse or generalized pelvic swelling or mass NOS

R19.09

Other intra-abdominal and pelvic swelling, mass and lump

R19.1

Abnormal bowel sounds

R19.11

Absent bowel sounds

R19.12

Hyperactive bowel sounds

R19.15

Other abnormal bowel sounds

Abnormal bowel sounds NOS

R19.2

Visible peristalsis

Hyperperistalsis

R19.3

Abdominal rigidity

Excludes1

abdominal rigidity with severe abdominal pain (R10.0)

R19.30

Abdominal rigidity, unspecified site

R19.31

Right upper quadrant abdominal rigidity

R19.32

Left upper quadrant abdominal rigidity

R19.33

Right lower quadrant abdominal rigidity

R19.34

Left lower quadrant abdominal rigidity

R19.35

Periumbilic abdominal rigidity

R19.36

Epigastric abdominal rigidity

R19.37

Generalized abdominal rigidity

R19.4

Change in bowel habit

Excludes1

constipation (K59.0-)
functional diarrhea (K59.1)

R19.5

Other fecal abnormalities

Abnormal stool color
Bulky stools
Mucus in stools
Occult blood in feces
Occult blood in stools
Excludes1	melena (K92.1) neonatal melena (P54.1)

R19.6

Halitosis

R19.7

Diarrhea, unspecified

Diarrhea NOS
Excludes1	functional diarrhea (K59.1) neonatal diarrhea (P78.3) psychogenic diarrhea (F45.8)

R19.8

Other specified symptoms and signs involving the digestive system and abdomen