R19.04 Left lower quadrant abdominal swelling, mass and lump

Billable ICD-10-CM code, FY2026.

Applies from R19 Other symptoms and signs involving the digestive system and abdomen

Excludes1 (never code together)

• acute abdomen (R10.0)

Applies from R19.0 Intra-abdominal and pelvic swelling, mass and lump

Excludes1 (never code together)

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

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 789.34 Abdominal or pelvic swelling, mass, or lump, left lower quadrant

Code annotations containing back-references to R19.04

Back-references to R19.0

• Type 1 Excludes: R22.2 Localized swelling, mass and lump, trunk ("intra-abdominal or pelvic mass and lump (R19.0-)")
• Type 1 Excludes: R22.2 Localized swelling, mass and lump, trunk ("intra-abdominal or pelvic swelling (R19.0-)")

Diagnosis Index entries for R19.04

• Mass › abdominal › left lower quadrant

Nearby codes

• R19.0 Intra-abdominal and pelvic swelling, mass and lump
• 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 (this code)
• R19.05 Periumbilic swelling, mass or lump
• R19.06 Epigastric swelling, mass or lump
• R19.07 Generalized intra-abdominal and pelvic swelling, mass and lump
• R19.09 Other intra-abdominal and pelvic swelling, mass and lump
• R19.1 Abnormal bowel sounds