Flank Pain ICD-10-CM Codes

Flank Pain ICD-10-CM Codes

Discover the 2023 guide on Flank Pain ICD-10-CM codes. Gain insights into the specific codes, clinical descriptions, and billing implications.

By Katherine Ellison on Jul 16, 2025.

Fact Checked by Ericka Pingol.

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What ICD-10 Codes Are Used for Flank Pain?

Flank pain is discomfort or pain in the side of the body between the upper abdomen and back. Here are the commonly used Flank Pain ICD codes:

  • R10.9: Unspecified abdominal pain (can include flank pain)
  • N23: Renal colic, unspecified (often associated with flank pain)

Which Flank Pain ICD Codes Are Billable?

Determining which Flank Pain ICD codes are billable is essential for healthcare providers. Here's an overview:

  • R10.9: Yes. This code can be used for unspecified abdominal pain, encompassing flank pain.
  • N23: Yes. This code is used for renal colic, a type of severe pain often felt in the flank due to kidney stones.

Clinical Information

Flank pain can arise from various conditions affecting the kidneys or surrounding structures. Here's what you need to know:

  • Symptoms may include a sharp, stabbing, or aching pain in the side, which can radiate to the groin.
  • Common causes include kidney stones, kidney infections, and muscle strains.
  • Diagnosis involves a physical examination, urine tests, and imaging studies like ultrasound or CT scans.
  • Treatment options depend on the underlying cause, including pain relievers, antibiotics, or procedures to remove or break down kidney stones.
  • Determining the root cause of flank pain is crucial for effective management.

Synonyms Include:

  • Side pain
  • Loin pain
  • Pain in the side
  • Renal pain
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