Billable / Specific Code
ICD-10-CM G90.522 is the diagnosis code for Complex regional pain syndrome I of left lower limb. This code falls under the section "Other disorders of the nervous system" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where G90.522 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, G90.522 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
G90.522 is the ICD-10-CM diagnosis code for "Complex regional pain syndrome I of left lower limb". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of G90.522 is G90.52 ("Complex regional pain syndrome I of lower limb"). G90.522 provides a more specific classification within this category.
G90.522 is located in Section G89-G99 — "Other disorders of the nervous system" within Chapter 6 of the ICD-10-CM Tabular List.
Use G90.522 when the patients documented diagnosis matches "Complex regional pain syndrome I of left lower limb" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Complex regional pain syndrome I of left lower limb is G90.522.
Yes, G90.522 can be used as a primary diagnosis code since it is billable and specific.
G90.522 is in Chapter 6 of the ICD-10-CM Tabular List.
Yes, G90.522 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.