Valid for Submission
S86.399S is a billable diagnosis code used to specify a medical diagnosis of other injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, sequela. The code S86.399S is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code S86.399S might also be used to specify conditions or terms like subluxation of peroneal tendon or tendinopathy of peroneal tendon. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
S86.399S is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like other injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level unspecified leg. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.
Unspecified diagnosis codes like S86.399S are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Subluxation of peroneal tendon
- Tendinopathy of peroneal tendon
Diagnostic Related Groups - MS-DRG Mapping
Present on Admission (POA)
Convert S86.399S to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S86.399S its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Leg Injuries and Disorders
Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures.
These injuries can affect the entire leg, or just the foot, ankle, knee, or hip. Certain diseases also lead to leg problems. For example, knee osteoarthritis, common in older people, can cause pain and limited motion. Problems in your veins in your legs can lead to varicose veins or deep vein thrombosis.
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