Coding for Strains in ICD 10May 30th, 2018 - BC Advantage
New England Patriots Linebacker Diagnosed with Pectoralis Major Muscle Tear
You may or may not know of
Although this type of injury is rare, it is becoming more common as more individuals participate in physical exercise and high-impact contact sports, such as football and weightlifting.
According to the National Institutes of Health, a review was carried out on 20 patients who had a pectoralis major muscle repair between 2003 and 2011, and the results were as follows:
- All patients were men with an average age of 30 years (ages 20-55) when injured.
- 60% of the patients suffered
injurywhile bench pressing, and 15% of the patients. suffered while wrestling. Other mechanisms of injury included throwing a football and jet skiing.
- Average time from injury to surgical repair was 3.8 months.
The pectoralis muscles are sometimes referred to as "pecs," "chest muscle," or "pectoral muscle" by
The pectoralis major attaches to the upper bone of the arm, called the humerus, and is divided into two parts. The clavicular head makes up the upper part, and the sternal head makes up the lower part.
The muscle fibers of the pectoralis end in a flat tendon, which is inserted into a groove called the intertubercular sulcus, in the upper humerus located in the upper arm.
The pectoralis major controls various actions in order to move the shoulder joint:
- Clavicular head flexes the humerus, as in throwing an underhand ball
- Sternocostal head adducts the humerus, as when flapping the arms
- Pectoralis major medially rotates the humerus, as when arm wrestling
- Pectoralis major keeps the arm attached to the trunk
The pectoralis major may tear or rupture in various parts of the muscle, with the most common being a rupture of the tendon
A patient who has had a rupture of the pectoralis muscle may complain of a sharp tearing sensation. When he attempts to rotate his arm inward and toward his chest (adduction and internal rotation), there will be resistance. The shoulder may also be painful and weak. On examination, there will be swelling and bruising, palpable effect and misshapen anterior axillary fold, weakness with adduction and internal rotation.
A partial rupture or an injury that basically tears in the muscle may not require surgical treatment. Instead, a sling may be used to immobilize the injury, along with ice, rest, and Advil for pain relief. If the tendon has been torn away from the bone, surgical treatment is recommended, especially when it involves high-level athletes. An MRI (magnetic resonance imaging) is typically done to make the diagnosis, and the earlier the surgery, the better the outcome, according to the National Institutes of Health.
According to the ICD-10-CM Official Guidelines for Coding and Reporting, an acute traumatic tear or rupture of a muscle or tendon is classified as a strain (think sTrain = tendon/muscle/fascia). A strain may be an overstretched muscle or a partial or complete tear. These types of injuries are found in Chapter 19 Injury, poisoning, and certain other consequences of external causes (S00-T88). Within this category, injury codes are broken down by body part, type of injury, and in some cases, laterality. The episode of care will also need to be reported and assigned as the 7th character to show "A" (initial encounter), "D" (subsequent encounter), or "S" (sequela).
Whenever possible, you should report the cause of injury, place of occurrence, and activity leading up to the injury. These codes may be found in Chapter 20.
Note: A sprain is different than a strain. A sprain is an injury to a ligament or joint, and codes for strains and sprains are found in two different categories.
A coding example:
A 28-year-old male presents to the outpatient clinic today with swelling and bruising over the anterior wall of
ICD-10-CM codes assigned:
- S29.011A - Strain of muscle and tendon of
frontwall of thorax, initial encounter
- Y92.39 - Other specified sports and athletic area as the place of occurrence of the external cause
- Y93.B9 - Activity, other involving muscle strengthening exercises
First of all, as a coder, we need to know the pectoralis major muscle is located in the upper chest, or thorax. Without this knowledge, it would be difficult to choose the correct code since there is no listing in the Index for pectoralis major muscle.
When looking up the term Strain, muscle (tendon) in the Alphabetic Index, it refers us to Injury, muscle, by site, strain. Under Injury, muscle, thorax, strain, front wall, it provides code S29.011. Verified in the Tabular, S29.011 is Strain of muscle and tendon on
Look in the External Cause of Injuries Index under Place of occurrence, gymnasium Y92.39. This can be verified in the Tabular under Y92.39 - Other specified sports and athletic area as the place of occurrence of the external cause.
A note at Y92 indicates "The following category is for use, when relevant, to identify the place of occurrence of the external cause. Use in conjunction with an activity code.
Place of occurrence should be recorded only at the initial encounter for treatment."
In the External Cause of Injuries Index, see Activity (involving) (of
A note at Y93 indicates, "These codes should be used in conjunction with codes for external cause status (Y99) and place of occurrence (Y92). Since there is no documentation as to the status, we cannot assign a Y99 code.
Remember that external cause codes are never assigned as a principal diagnosis.
In summary, pectoralis major muscle tears are rare injuries, but they are becoming more common as more individuals take part in high-impact sports and weightlifting. As coders, we need to understand the terminology and anatomy of the pectoralis major muscle and be able to code for related injuries. We also need to know that an acute traumatic tear or rupture of a pectoralis major muscle is classified as a strain and not a sprain. Finally, we should assign as many external cause codes as needed to tell the whole story.
Debbie Jones, CPC, CCA, currently works as an administrative specialist for CertificationCoachingOrg (cco.us) and writes healthcare-related articles for various companies. In addition, she has a new blog called Medical Coding Buff (medicalcodingbuff.com).
If you have questions or comments about this article please contact us. Comments that provide additional related information may be added here by our Editors.
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