2021 ICD-10-CM Code S23.4

Sprain of ribs and sternum

Version 2021
Non-Billable Code

Not Valid for Submission

S23.4 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of sprain of ribs and sternum. The code 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:S23.4
Short Description:Sprain of ribs and sternum
Long Description:Sprain of ribs and sternum

Code Classification

Specific Coding for Sprain of ribs and sternum

Header codes like S23.4 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 sprain of ribs and sternum:

  • S23.41 - Sprain of ribs
  • S23.41XA - Sprain of ribs, initial encounter
  • S23.41XD - Sprain of ribs, subsequent encounter
  • S23.41XS - Sprain of ribs, sequela
  • S23.42 - Sprain of sternum
  • S23.420 - Sprain of sternoclavicular (joint) (ligament)
  • S23.420A - Sprain of sternoclavicular (joint) (ligament), initial encounter
  • S23.420D - Sprain of sternoclavicular (joint) (ligament), subsequent encounter
  • S23.420S - Sprain of sternoclavicular (joint) (ligament), sequela
  • S23.421 - Sprain of chondrosternal joint
  • S23.421A - Sprain of chondrosternal joint, initial encounter
  • S23.421D - Sprain of chondrosternal joint, subsequent encounter
  • S23.421S - Sprain of chondrosternal joint, sequela
  • S23.428 - Other sprain of sternum
  • S23.428A - Other sprain of sternum, initial encounter
  • S23.428D - Other sprain of sternum, subsequent encounter
  • S23.428S - Other sprain of sternum, sequela
  • S23.429 - Unspecified sprain of sternum
  • S23.429A - Unspecified sprain of sternum, initial encounter
  • S23.429D - Unspecified sprain of sternum, subsequent encounter
  • S23.429S - Unspecified sprain of sternum, sequela

Information for Patients


Chest Injuries and Disorders

The chest is the part of the body between your neck and your abdomen. It includes the ribs and breastbone. Inside your chest are several organs, including the heart, lungs, and esophagus. The pleura, a large thin sheet of tissue, lines the inside of the chest cavity.

Chest injuries and disorders include


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Sprains and Strains

A sprain is a stretched or torn ligament. Ligaments are tissues that connect bones at a joint. Falling, twisting, or getting hit can all cause a sprain. Ankle and wrist sprains are common. Symptoms include pain, swelling, bruising, and being unable to move your joint. You might feel a pop or tear when the injury happens.

A strain is a stretched or torn muscle or tendon. Tendons are tissues that connect muscle to bone. Twisting or pulling these tissues can cause a strain. Strains can happen suddenly or develop over time. Back and hamstring muscle strains are common. Many people get strains playing sports. Symptoms include pain, muscle spasms, swelling, and trouble moving the muscle.

At first, treatment of both sprains and strains usually involves resting the injured area, icing it, wearing a bandage or device that compresses the area, and medicines. Later treatment might include exercise and physical therapy.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


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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)