2021 ICD-10-CM Code S01.55

Open bite of lip and oral cavity

Version 2021

Not Valid for Submission

S01.55 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of open bite of lip and oral cavity. The code is not specific and is NOT valid for the year 2021 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.

ICD-10:S01.55
Short Description:Open bite of lip and oral cavity
Long Description:Open bite of lip and oral cavity

Code Classification

Coding Guidelines

The appropriate 7th character is to be added to each code from block Open wound of head (S01). Use the following options for the aplicable episode of care:

Specific Coding for Open bite of lip and oral cavity

Non-specific codes like S01.55 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for open bite of lip and oral cavity:

  • NON-BILLABLE CODE - S01.551 for Open bite of lip
  • BILLABLE CODE - Use S01.551A for initial encounter
  • BILLABLE CODE - Use S01.551D for subsequent encounter
  • BILLABLE CODE - Use S01.551S for sequela
  • NON-BILLABLE CODE - S01.552 for Open bite of oral cavity
  • BILLABLE CODE - Use S01.552A for initial encounter
  • BILLABLE CODE - Use S01.552D for subsequent encounter
  • BILLABLE CODE - Use S01.552S for sequela

Information for Patients


Animal Bites

Also called: Cat bites, Dog bites

Wild animals usually avoid people. They might attack, however, if they feel threatened, are sick, or are protecting their young or territory. Attacks by pets are more common. Animal bites rarely are life-threatening, but if they become infected, you can develop serious medical problems.

To prevent animal bites and complications from bites

If an animal bites you, clean the wound with soap and water as soon as possible. Get medical attention if necessary.

Centers for Disease Control and Prevention


[Learn More in MedlinePlus]

Mouth Disorders

Your mouth is one of the most important parts of your body. It has many different functions. It allows you to

Any problem that affects your mouth can make it hard to eat, drink, or even smile. Some common mouth problems include

Treatment for mouth disorders varies, depending on the problem. If a mouth problem is caused by some other disease, treating that disease can help. It is also important to keep your mouth clean and healthy by brushing, flossing, and not using tobacco.


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)