S56.122A - Laceration of flexor muscle, fascia and tendon of left index finger at forearm level, initial encounter

Version 2023
Billable Code
7th Character Code
Initial Code
MS-DRG Mapping
Convert to ICD-9
ICD-10:S56.122A
Short Description:Lacerat flexor musc/fasc/tend l idx fngr at forarm lv, init
Long Description:Laceration of flexor muscle, fascia and tendon of left index finger at forearm level, initial encounter
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the elbow and forearm (S50-S59)
      • Injury of muscle, fascia and tendon at forearm level (S56)

S56.122A is a billable ICD-10 code used to specify a medical diagnosis of laceration of flexor muscle, fascia and tendon of left index finger at forearm level, initial encounter. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

S56.122A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like laceration of flexor muscle fascia and tendon of left index finger at forearm level. 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.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Injury of muscle, fascia and tendon at forearm level (S56). Use the following options for the aplicable episode of care:

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
S56.122A881.20 - Open wnd forearm w tendn
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Arm Injuries and Disorders

Of the 206 bones in your body, three of them are in your arm: the humerus, radius, and ulna. Your arms are also made up of muscles, joints, tendons, and other connective tissue. Injuries to any of these parts of the arm can occur during sports, a fall, or an accident.

Types of arm injuries include :

You may also have problems or injure specific parts of your arm, such as your hand, wrist, elbow, or shoulder.


[Learn More in MedlinePlus]

Wounds and 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:


[Learn More in MedlinePlus]

Code History

Previous Code: S56.122

Parent Code: S56.122

Next Code: S56.122D