R10.813 Right lower quadrant abdominal tenderness

Billable ICD-10-CM code, FY2026.

Applies from R10 Abdominal and pelvic pain

Excludes1 (never code together)

• renal colic (N23)

Excludes2 (not included here)

• costovertebral (angle) tenderness (R39.85)
• dorsalgia (M54.-)
• flatulence and related conditions (R14.-)

Applies from R10.81 Abdominal tenderness

Applicable to

• Abdominal tenderness NOS

Excludes2 (not included here)

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

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 789.63 Abdominal tenderness, right lower quadrant (approximate)

Code annotations containing back-references to R10.813

Back-references to R10

• Type 2 Excludes: G89 Pain, not elsewhere classified ("abdomen pain (R10.-)")
• Type 2 Excludes: R39.85 Costovertebral (angle) tenderness ("abdominal and pelvic pain (R10.-)")
• Type 1 Excludes: R52 Pain, unspecified ("abdomen pain (R10.-)")

Diagnosis Index entries for R10.813

• Tenderness, abdominal › right lower quadrant

Nearby codes

• R10.33 Periumbilical pain
• R10.8 Other abdominal pain
• R10.81 Abdominal tenderness
• R10.811 Right upper quadrant abdominal tenderness
• R10.812 Left upper quadrant abdominal tenderness
• R10.813 Right lower quadrant abdominal tenderness (this code)
• 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