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Help with ICD-10 Codes

Apex requires diagnosis codes for all Medicare orders.

The tests listed in our "Search For A valid Code By Test" are Medicare Limited Coverage tests. The search is to be used as a guide to determine if the test is reimbursable by Medicare based on the patient's symptoms or medical condition and if a ABN is necessary.

Diagnosis codes are still required for tests that are not designated as LCT's (Limited Coverage Tests), however they are not limited to a specific diagnosis.

To prevent unnecessary delays in testing, please remember to include a valid diagnosis on all Medicare orders. Use our searches under the Help With ICD-10 tab to assist in properly coding a patients diagnosis. Apex will only submit diagnosis information provided to us by the ordering provider.

ICD-9 to ICD-10 Conversion Tool

Enter a valid ICD-9 Code and convert to an ICD-10 Code.
Note: Conversions are based on CMS's issued General Equivalent Mapping Guide and is for reference only. Only 1 to 1 matches will be displayed here according to the GEM Mapping Guide.

Common Code Conversion List

Apex has compiled a list of our most commonly used diagnosis codes and their ICD-9 to ICD-10 conversions based on CMS's General Equivalent Mapping Guide.


Search For a Valid Code By Test

Search valid codes for Medicare Limited Coverage Tests (LCT's) to determine if a test is reimbursable by Medicare.


Search ICD-9/ICD-10 Code By Diagnosis

Not sure of a code? Enter a diagnosis and translate into an ICD-9/ICD-10 code.

Verify a Test and a Valid Diagnosis

Select a test then enter a code to see if it is valid for a given test.