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Using ICD-10 codes for diagnoses

Using ICD-10 codes for diagnoses

At SimplePractice, we spend a lot of time thinking about our customers. Our goal is to provide you with software that’s flexible enough to run your unique practice in the way you want, yet we don't want to overwhelm you with too many buttons, menus, features, and options.

In this first version of the ICD-10 list in SimplePractice, we've chosen not to include all 69,000+ ICD-10 codes because we know this might be overwhelming. If you find that you need a code that isn’t listed, just let us know and we’ll get it added for you.

As it stands, we’ve included every ICD-10 code indicated in the DSM-5 that are included on These may differ from the DSM book.

Note: If there is a code you are looking for, you can determine if it's billable, then contact us and we’ll be happy to add them if it is a billable code.

Where are the ICD-10 codes in the DSM-5?

You can find ICD-10 codes in the back of your DSM-5. You'll see an alphabetical list of diagnoses you've been using with ICD-9 codes. In this list, the DSM has mapped each of these diagnoses to the appropriate ICD-10 code. This is the basis for version 1 of the ICD-10 list in SimplePractice.

Most experts agree that this DSM-5 list of ICD-10 codes will (at least for now) be the primary ones that payers require for reimbursement and documentation. But no one (insurance payers included) has a definitive list of the ICD-10 codes behavioral health providers should use.

For this reason, we’ll continue to add ICD-10 codes to the list in your account as we learn which you are using successfully. We are monitoring this situation closely to provide you with the best list of ICD-10 codes available.

We're making SimplePractice for you, so if there are codes you need that aren't available in the first version of our ICD-10 list, contact us and we’ll be happy to add them.

How to access the ICD-10

  1. Download the full, official list of ICD-10 codes here. 
  2. Click 2016 Code tables and index to download the zip file.
  3. Unzip the downloaded file. The document you want in this folder is Tabular.pdfThe ICD-10 codes for behavioral health are in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

Yearly ICD-10 updates 

Every year on October 1st, the list of billable ICD-10 codes gets updated. This can mean that some of the diagnosis codes that you previously used successfully will be outdated. Whether you file insurance claims or not, you'll need to make sure that you update your records to avoid any issues.

Important: If you don't bill insurance, you'll need to follow steps #2 and #3 below. If you do insurance billing, make sure to follow all of the steps below.  

  1. Submit your claims for any appointments that took place prior to October 1st and make sure you don't include any post-October 1st appointments on these claims. This is to avoid any mix-ups on the payer's end.
  2. Find out if the diagnosis code(s) you frequently use have been modified. 
  3. If the diagnosis code for a client needs to be updated, you must update the code for all future appointments beginning October 1st. Here's how:
    • Go to the client's Overview page
    • Click +Create > Diagnosis & 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 1, 2019:

From then on, every claim you create for every appointment that took place after October 1st should show up with the updated diagnosis code in box 21. Verify this before you submit any claims to avoid rejections from the payers. You will also notice the new diagnosis codes on your superbills.

Important: Deprecated ICD codes will remain in the system until December 1, 2019. This is to allow time for appointments before October 1 to process.

If you need to use an old code after December 1, 2019, you'll need to add it to your claim form manually:

Note: For more information, please see the resources provided by CMS.

Why does the ICD-10 code print without a decimal?

When you print a CMS1500 claim form, you'll notice that the ICD-10 code prints without a decimal point listed. Each ICD-10 code is uniquely mapped so that there is no difference when the decimal point is omitted. We don't include the decimal on any downloaded claims to avoid complications with insurers. In some cases, insurance companies may actually reject claims that include the decimal.

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