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Home / ICD-10-CM / Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) / Symptoms and signs involving the digestive system and abdomen (R10-R19)

R10.A: Pain localized to flank

ICD-10-CM code R10.A

New code ยท FY2026

Not billable: this is a header. Use one of the more specific codes below.

  • New code, effective October 1, 2025 (FY2026).

Code breakdown

R10.A

  1. R10CategoryAbdominal and pelvic pain
  2. ACharacter 4Pain localized to flank

Coding notes

Inclusion terms

  • 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-)

Excludes1 (from R10)

  • renal colic (N23)

Excludes2 (from R10)

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

Codes under R10.A

  • R10.A0 Flank pain, unspecified side
  • R10.A1 Flank pain, right side
  • R10.A2 Flank pain, left side
  • R10.A3 Flank pain, bilateral

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All FY2026 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.