Valid for Submission
T33.812A is a billable diagnosis code used to specify a medical diagnosis of superficial frostbite of left ankle, initial encounter. The code T33.812A is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
T33.812A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like superficial frostbite of left ankle. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.
Diagnostic Related Groups - MS-DRG Mapping
Convert T33.812A to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code T33.812A 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
Frostbite is an injury to the body that is caused by freezing. It most often affects the nose, ears, cheeks, chin, fingers, or toes. Frostbite can permanently damage the body, and severe cases can lead to amputation.
If you have frostbite, the skin in that area may turn white or grayish-yellow. It may feel firm or waxy when you touch it. The area will also feel numb.
If you have symptoms of frostbite, seek medical care. But if immediate medical care isn't available, here are steps to take:
- Get into a warm room as soon as possible.
- If possible, do not walk on frostbitten feet or toes. Walking increases the damage.
- Put the affected area in warm - not hot - water.
- You can also warm the affected area using body heat. For example, use your armpit to warm frostbitten fingers.
- Don't rub the frostbitten area with snow or massage it at all. This can cause more damage.
- Don't use a heating pad, heat lamp, or the heat of a stove, fireplace, or radiator for warming. Since frostbite makes an area numb, you could burn it.
Centers for Disease Control and Prevention
- Frostbite (Medical Encyclopedia)
- How to prevent frostbite and hypothermia (Medical Encyclopedia)
[Learn More in MedlinePlus]