Valid for Submission
S40.921A is a billable diagnosis code used to specify a medical diagnosis of unspecified superficial injury of right upper arm, initial encounter. The code S40.921A is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
S40.921A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like unspecified superficial injury of right upper arm. 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.
Unspecified diagnosis codes like S40.921A 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 Superficial injury of shoulder and upper arm (S40). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Diagnostic Related Groups - MS-DRG Mapping
Convert S40.921A to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S40.921A 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
Also called: Contusion, Ecchymoses
A bruise is a mark on your skin caused by blood trapped under the surface. It happens when an injury crushes small blood vessels but does not break the skin. Those vessels break open and leak blood under the skin.
Bruises are often painful and swollen. You can get skin, muscle and bone bruises. Bone bruises are the most serious.
It can take months for a bruise to fade, but most last about two weeks. They start off a reddish color, and then turn bluish-purple and greenish-yellow before returning to normal. To reduce bruising, ice the injured area and elevate it above your heart. See your health care provider if you seem to bruise for no reason, or if the bruise appears to be infected.
- Bleeding into the skin (Medical Encyclopedia)
- Bruise (Medical Encyclopedia)
[Learn More in MedlinePlus]
Wounds and Injuries
Also called: Traumatic injuries
An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening. Injuries can happen at work or play, indoors or outdoors, driving a car, or walking across the street.
Wounds are injuries that break the skin or other body tissues. They include cuts, scrapes, scratches, and punctured skin. They often happen because of an accident, but surgery, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but it is important to clean them. Serious and infected wounds may require first aid followed by a visit to your doctor. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.
Other common types of injuries include
- Animal bites
- Electrical injuries
- Sprains and strains
- Bleeding (Medical Encyclopedia)
- Crush injury (Medical Encyclopedia)
- Cuts and puncture wounds (Medical Encyclopedia)
- Electrical injury (Medical Encyclopedia)
- Gunshot wounds -- aftercare (Medical Encyclopedia)
- How wounds heal (Medical Encyclopedia)
- Laceration - sutures or staples - at home (Medical Encyclopedia)
- Lacerations - liquid bandage (Medical Encyclopedia)
- Surgical wound care (Medical Encyclopedia)
- Surgical wound infection - treatment (Medical Encyclopedia)
- Wet to dry dressing changes (Medical Encyclopedia)
- Wound care centers (Medical Encyclopedia)
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