R19.33 Right lower quadrant abdominal rigidity

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 R19.3 Abdominal rigidity

Excludes1 (never code together)

• abdominal rigidity with severe abdominal pain (R10.0)

MS-DRG index

Defines the logic of DRG(s) 393-395 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 789.43 Abdominal rigidity, right lower quadrant

Code annotations containing back-references to R19.33

Back-references to R19.3

• Type 1 Excludes: R10.0 Acute abdomen ("abdominal rigidity NOS (R19.3)")
• Type 1 Excludes: R10.85 Abdominal pain of multiple sites ("abdominal rigidity NOS (R19.3)")

Diagnosis Index entries for R19.33

• Rigid, rigidity › abdominal › right lower quadrant

Nearby codes

• R19.2 Visible peristalsis
• R19.3 Abdominal rigidity
• 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 (this code)
• 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