Valid for Submission
S21.459D is a billable diagnosis code used to specify a medical diagnosis of open bite of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounter. The code S21.459D is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
S21.459D is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like open bite of unspecified back wall of thorax with penetration into thoracic cavity. According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or recovery phase of treatment. Subsequent diagnosis codes are appropriate during the recovery phase, no matter how many times the patient has seen the provider for this condition. If the provider needs to adjust the patient's care plan due to a setback or other complication, the encounter becomes active again.
Unspecified diagnosis codes like S21.459D 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 appropriate 7th character is to be added to each code from block Open wound of thorax (S21). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Diagnostic Related Groups - MS-DRG Mapping
Present on Admission (POA)
Convert S21.459D to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S21.459D 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
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
- Never pet, handle, or feed unknown animals
- Leave snakes alone
- Watch your children closely around animals
- Vaccinate your cats, ferrets, and dogs against rabies
- Spay or neuter your dog to make it less aggressive
- Get a tetanus booster if you have not had one recently
- Wear boots and long pants when you are in areas with venomous snakes
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
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