ICD-10-CM Code R22.40

Localized swelling, mass and lump, unspecified lower limb

Version 2021 Billable Code No Valid Principal Dx

Valid for Submission

R22.40 is a billable code used to specify a medical diagnosis of localized swelling, mass and lump, unspecified lower limb. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code R22.40 might also be used to specify conditions or terms like foot swelling, localized swelling, mass and lump, lower limb, lump on thigh, mass of ankle, mass of foot, mass of hip region, etc

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Short Description:Localized swelling, mass and lump, unspecified lower limb
Long Description:Localized swelling, mass and lump, unspecified lower limb


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Foot swelling
  • Localized swelling, mass and lump, lower limb
  • Lump on thigh
  • Mass of ankle
  • Mass of foot
  • Mass of hip region
  • Mass of knee joint
  • Mass of lesser toe
  • Mass of lower limb
  • Mass of psoas muscle
  • Mass of shin
  • Mass of tibia
  • Mass of toe
  • Nodule of skin of foot
  • Nodule of skin of lower limb
  • Nodule of subcutaneous tissue of foot
  • Nodule of subcutaneous tissue of lower limb
  • Nodule on toe
  • Sausage toe
  • Soft tissue swelling of ankle joint
  • Swelling / lump finding
  • Swelling of ankle joint
  • Swelling of lower leg
  • Swollen ankle region
  • Swollen ankle region
  • Swollen calf
  • Toe swelling

Diagnostic Related Groups

The ICD-10 code R22.40 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert R22.40 to ICD-9

  • 782.2 - Local suprficial swellng (Approximate Flag)

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)
      • Localized swelling, mass and lump of skin, subcu (R22)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021