ICD-10-CM 2027 diagnosis code
R10.8AFlank tenderness
R10.8A is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.
Code last changed in FY2026 (effective October 1, 2025). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About R10.8A
R10.8A is the ICD-10-CM diagnosis code for flank tenderness. It belongs to category R10 (abdominal and pelvic pain), block R10-R19 (symptoms and signs involving the digestive system and abdomen) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within R10.8 (other abdominal pain), R10.8A is specifically for flank tenderness. Related codes cover abdominal tenderness (R10.81), rebound abdominal tenderness (R10.82), colic (R10.83), generalized abdominal pain (R10.84) and abdominal pain of multiple sites (R10.85).
To report this condition, pick the subcode that matches the documentation: R10.8A1 (tenderness), R10.8A2 (tenderness), R10.8A3 (tenderness) and R10.8A9 (unspecified).
It was added in FY2026, effective October 1, 2025.
Specific codes under R10.8A
Notes that apply from higher levels
Instructions written at a parent level also apply to R10.8A.
Broader instructions also apply from R10-R19 Symptoms and signs involving the digestive system and abdomen and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2026 (effective 10/1/2025): Added
- No changes since FY2026.
Common questions about R10.8A
Is R10.8A billable?
- No. R10.8A is a header code. Report one of its more specific subcodes instead.