R10.A0 – Flank pain, unspecified side

ICD-10-CM 2027 diagnosis code · Symptoms and signs involving the digestive system and abdomen

Billable code

ICD-10-CM code R10.A0

Code: R10.A0 (claims format: R10A0)
Description: Flank pain, unspecified side
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R10-R19 Symptoms and signs involving the digestive system and abdomen
Parent codes: R10 › R10.A

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

R10 – Abdominal and pelvic pain

Excludes1 (not coded here):

renal colic (N23)

Excludes2 (not included here):

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

R10.A – Pain localized to flank

Applicable to:

Lateral abdomen pain
Lateral flank pain
Latus region pain

Excludes2 (not included here):

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

Block R10-R19

Excludes2 (not included here):

congenital or infantile pylorospasm (Q40.0)
gastrointestinal hemorrhage (K92.0-K92.2)
intestinal obstruction (K56.-)
newborn gastrointestinal hemorrhage (P54.0-P54.3)
newborn intestinal obstruction (P76.-)
pylorospasm (K31.3)
signs and symptoms involving the urinary system (R30-R39)
symptoms referable to female genital organs (N94.-)
symptoms referable to male genital organs (N48-N50)

Index terms for R10.A0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Pain, flank

Related codes in R10.A

Frequently asked questions

What is ICD-10 code R10.A0?

R10.A0 is the ICD-10-CM code for flank pain, unspecified side, in the block R10-R19 (Symptoms and signs involving the digestive system and abdomen).

Is R10.A0 a billable code?

Yes. R10.A0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R10.A0 belong to?

It belongs to category R10 – Abdominal and pelvic pain.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.