Medical Billing GroupBilling, collections and credentialing

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.A0: Flank pain, unspecified side

ICD-10-CM code R10.A0

New code ยท FY2026

Billable: use this code on claims.

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

Code breakdown

R10.A0

  1. R10CategoryAbdominal and pelvic pain
  2. ACharacter 4Pain localized to flank
  3. 0Character 5Flank pain, unspecified side

Coding notes

Inclusion terms (from R10.A)

  • Lateral abdomen pain
  • Lateral flank pain
  • Latus region pain

Excludes2 (from R10.A)

  • 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.-)

Medicare coverage

R10.A0 is listed as a covered diagnosis in 1 Medicare billing and coding article:

  • A55028 Billing and Coding: Lab: Bladder/Urothelial Tumor Markers

Check this code

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.