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  6. 2024 ICD-10-CM Code G90.52
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code G90.52

Complex regional pain syndrome I of lower limb

ICD-10-CM Code:
G90.52
ICD-10 Code for:
Complex regional pain syndrome I of lower limb
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the nervous system
    (G00–G99)
    • Other disorders of the nervous system
      (G89-G99)
      • Disorders of autonomic nervous system
        (G90)

G90.52 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of complex regional pain syndrome i of lower limb. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Complex regional pain syndrome I of lower limb

Non-specific codes like G90.52 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for complex regional pain syndrome i of lower limb:

  • Use G90.521 for Complex regional pain syndrome I of right lower limb - BILLABLE CODE

  • Use G90.522 for Complex regional pain syndrome I of left lower limb - BILLABLE CODE

  • Use G90.523 for Complex regional pain syndrome I of lower limb, bilateral - BILLABLE CODE

  • Use G90.529 for Complex regional pain syndrome I of unspecified lower limb - BILLABLE CODE

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Patient Education


Complex Regional Pain Syndrome

Complex regional pain syndrome (CRPS) is a chronic pain condition. It causes intense pain, usually in the arms, hands, legs, or feet. It may happen after an injury, either to a nerve or to tissue in the affected area. Rest and time may only make it worse.

Symptoms in the affected area are:

  • Dramatic changes in skin temperature, color, or texture
  • Intense burning pain
  • Extreme skin sensitivity
  • Swelling and stiffness in affected joints
  • Decreased ability to move the affected body part

The cause of CRPS is unknown. There is no specific diagnostic test. Your doctor will diagnose CRPS based on your signs and symptoms.

There is no cure. It can get worse over time, and may spread to other parts of the body. Occasionally the symptoms go away, either temporarily or for good. Treatment focuses on relieving the pain, and can include medicines, physical therapy, and nerve blocks.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.