ICD-10-CM 2027
ICD-10 code for abdominal pain
Confirmed by the official ICD-10-CM index entry “pain (s) › abdominal”. Page updated September 29, 2026.
About coding abdominal pain
The ICD-10-CM code for abdominal pain is R10.9 (Unspecified abdominal pain). The official index lists 41 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R10.9.
It is also searched as stomach pain.
Within R10, choose R10.9 (Unspecified abdominal pain) only when documentation doesn't support a more specific option: acute abdomen (R10.0), pain localized to upper abdomen (R10.1), pelvic and perineal pain (R10.2), pain localized to other parts of lower abdomen (R10.3), other abdominal pain (R10.8) and pain localized to flank (R10.A).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Related Abdominal pain codes
- 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
- R10.20 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
- R10.30 Lower abdominal pain, unspecified
- R10.31 Right lower quadrant pain
- R10.32 Left lower quadrant pain
- R10.33 Periumbilical pain
- 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
- R10.821 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
- R10.84 Generalized abdominal pain
- R10.85 Abdominal pain of multiple sites
- R10.8A1 Right flank tenderness
- R10.8A2 Left flank tenderness
- R10.8A3 Suprapubic tenderness
- R10.8A9 Flank tenderness, unspecified
- R10.A0 Flank pain, unspecified side
- R10.A1 Flank pain, right side
- R10.A2 Flank pain, left side
- R10.A3 Flank pain, bilateral
Common questions about abdominal pain ICD-10 codes
What is the ICD-10 code for abdominal pain?
- R10.9 — Unspecified abdominal pain. More specific codes apply when the documentation supports them: R10.0, R10.10, R10.11, R10.12 and others below.
What is the ICD-10 code for acute abdomen?
- R10.0 — Acute abdomen.
What is the ICD-10 code for upper abdominal pain, unspecified?
- R10.10 — Upper abdominal pain, unspecified.
What is the ICD-10 code for right upper quadrant pain?
- R10.11 — Right upper quadrant pain.
What is the ICD-10 code for left upper quadrant pain?
- R10.12 — Left upper quadrant pain.
What is the ICD-10 code for epigastric pain?
- R10.13 — Epigastric pain.
What is the ICD-10 code for pelvic and perineal pain unspecified side?
- R10.20 — Pelvic and perineal pain unspecified side.
Is R10.9 billable?
- Yes. R10.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R10.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R10.9 as a principal diagnosis.
Is R10.9 a CC or MCC?
- No. R10.9 is neither a CC nor an MCC under MS-DRG v44.0.