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Using ICD-10 codes for diagnoses

Using ICD-10 codes for diagnoses

The list of billable ICD-10 codes gets updated every year on October 1st. This means that codes you previously used may become outdated. It’s important to use current codes for diagnoses, whether you file insurance claims or not. 

In this guide, we'll cover:

Do you use ICD-10 or DSM-5 descriptions?

While you can find the ICD-10 codes available in your account in the DSM-5, you may find that the descriptions aren’t aligned. Because many of our customers bill insurance, we use the ICD-10 descriptions from This database keeps codes up-to-date, and the codes are confirmed as billable. 

How can I tell if a code is billable?

Every year on October 1st, the list of billable ICD-10 codes is updated. This means that diagnosis codes you previously used may become outdated. There may also be certain codes that you’d like to use that aren’t billable for insurance, and therefore aren’t available in SimplePractice. 

You can confirm a code’s current description as well as check if it’s billable by following these steps:

  • Navigate to the ICD-10 database
  • Search the code
  • Click the ICD-10 CM Diagnosis Code


  • Confirm the code has the current year and is listed as a Billable/Specific Code in green


What if I can’t find a code in SimplePractice?

If a code is listed as active and billable for the current year but you can’t find it in your account, we’ll be happy to add it for you. 

To request a code gets added, submit a help request to our team and include the code and its description, as listed in the ICD-10 database.

We’ll verify the code on our end and will let you know once it’s added. 

How do I update a code in a client’s file?

The list of billable ICD-10 codes is updated every year on October 1st. Whether you file insurance claims or not, you’ll need to make sure that you update your client records.

Important: If you need to submit claims for any appointments that took place prior to October 1st, make sure not to include any post-October 1st appointments. This will lead to the claim being rejected. If a claim has been rejected stating that an invalid ICD code was used, you’ll need to update the client’s file, delete, and recreate the claim. Before deleting a rejected claim, it’s recommended to download a copy and save its clearinghouse reference number.

If a diagnosis code(s) you use has been modified, follow these steps to update a client’s file: 

  • Navigate to the client's Overview page
  • Click New > Diagnosis and treatment plan
  • Select the new diagnosis code from the drop-down menu
  • Set the Date & Time of Diagnosis to a date on or after October 1st of the current year


  • Click Save

How do I add a code description to a superbill?

When billing out-of-network, some insurance payers may ask that you include a code’s description on a superbill. To do this: 

  • Navigate to Settings > Documents
  • Scroll down to Superbills
  • Check the Include Diagnosis Description option


  • Click Save Documents

Note: If a superbill was created before enabling this setting, delete it and recreate it for the change to take effect. 

If you need multiple diagnosis codes included on a claim or superbill, see: How do I include multiple diagnoses on claims/superbills?

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