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  6. 2024 ICD-10-CM Code S56.1

2024 ICD-10-CM Diagnosis Code S56.1

Injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level

ICD-10-CM Code:
S56.1
ICD-10 Code for:
Injury of flexor musc/fasc/tend and unsp finger at forarm lv
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the elbow and forearm
      (S50-S59)
      • Injury of muscle, fascia and tendon at forearm level
        (S56)

S56.1 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like S56.1 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.

Specific Coding Applicable to Injury of flexor musc/fasc/tend and unsp finger at forarm lv

Non-specific codes like S56.1 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for injury of flexor musc/fasc/tend and unsp finger at forarm lv:

  • S56.10 for Unspecified injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level - NON-BILLABLE CODE

  • S56.101 for Unspecified injury of flexor muscle, fascia and tendon of right index finger at forearm level - NON-BILLABLE CODE

  • Use S56.101A for initial encounter - BILLABLE CODE

  • Use S56.101D for subsequent encounter - BILLABLE CODE

  • Use S56.101S for sequela - BILLABLE CODE

  • S56.102 for Unspecified injury of flexor muscle, fascia and tendon of left index finger at forearm level - NON-BILLABLE CODE

  • Use S56.102A for initial encounter - BILLABLE CODE

  • Use S56.102D for subsequent encounter - BILLABLE CODE

  • Use S56.102S for sequela - BILLABLE CODE

  • S56.103 for Unspecified injury of flexor muscle, fascia and tendon of right middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.103A for initial encounter - BILLABLE CODE

  • Use S56.103D for subsequent encounter - BILLABLE CODE

  • Use S56.103S for sequela - BILLABLE CODE

  • S56.104 for Unspecified injury of flexor muscle, fascia and tendon of left middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.104A for initial encounter - BILLABLE CODE

  • Use S56.104D for subsequent encounter - BILLABLE CODE

  • Use S56.104S for sequela - BILLABLE CODE

  • S56.105 for Unspecified injury of flexor muscle, fascia and tendon of right ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.105A for initial encounter - BILLABLE CODE

  • Use S56.105D for subsequent encounter - BILLABLE CODE

  • Use S56.105S for sequela - BILLABLE CODE

  • S56.106 for Unspecified injury of flexor muscle, fascia and tendon of left ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.106A for initial encounter - BILLABLE CODE

  • Use S56.106D for subsequent encounter - BILLABLE CODE

  • Use S56.106S for sequela - BILLABLE CODE

  • S56.107 for Unspecified injury of flexor muscle, fascia and tendon of right little finger at forearm level - NON-BILLABLE CODE

  • Use S56.107A for initial encounter - BILLABLE CODE

  • Use S56.107D for subsequent encounter - BILLABLE CODE

  • Use S56.107S for sequela - BILLABLE CODE

  • S56.108 for Unspecified injury of flexor muscle, fascia and tendon of left little finger at forearm level - NON-BILLABLE CODE

  • Use S56.108A for initial encounter - BILLABLE CODE

  • Use S56.108D for subsequent encounter - BILLABLE CODE

  • Use S56.108S for sequela - BILLABLE CODE

  • S56.109 for Unspecified injury of flexor muscle, fascia and tendon of unspecified finger at forearm level - NON-BILLABLE CODE

  • Use S56.109A for initial encounter - BILLABLE CODE

  • Use S56.109D for subsequent encounter - BILLABLE CODE

  • Use S56.109S for sequela - BILLABLE CODE

  • S56.11 for Strain of flexor muscle, fascia and tendon of other and unspecified finger at forearm level - NON-BILLABLE CODE

  • S56.111 for Strain of flexor muscle, fascia and tendon of right index finger at forearm level - NON-BILLABLE CODE

  • Use S56.111A for initial encounter - BILLABLE CODE

  • Use S56.111D for subsequent encounter - BILLABLE CODE

  • Use S56.111S for sequela - BILLABLE CODE

  • S56.112 for Strain of flexor muscle, fascia and tendon of left index finger at forearm level - NON-BILLABLE CODE

  • Use S56.112A for initial encounter - BILLABLE CODE

  • Use S56.112D for subsequent encounter - BILLABLE CODE

  • Use S56.112S for sequela - BILLABLE CODE

  • S56.113 for Strain of flexor muscle, fascia and tendon of right middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.113A for initial encounter - BILLABLE CODE

  • Use S56.113D for subsequent encounter - BILLABLE CODE

  • Use S56.113S for sequela - BILLABLE CODE

  • S56.114 for Strain of flexor muscle, fascia and tendon of left middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.114A for initial encounter - BILLABLE CODE

  • Use S56.114D for subsequent encounter - BILLABLE CODE

  • Use S56.114S for sequela - BILLABLE CODE

  • S56.115 for Strain of flexor muscle, fascia and tendon of right ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.115A for initial encounter - BILLABLE CODE

  • Use S56.115D for subsequent encounter - BILLABLE CODE

  • Use S56.115S for sequela - BILLABLE CODE

  • S56.116 for Strain of flexor muscle, fascia and tendon of left ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.116A for initial encounter - BILLABLE CODE

  • Use S56.116D for subsequent encounter - BILLABLE CODE

  • Use S56.116S for sequela - BILLABLE CODE

  • S56.117 for Strain of flexor muscle, fascia and tendon of right little finger at forearm level - NON-BILLABLE CODE

  • Use S56.117A for initial encounter - BILLABLE CODE

  • Use S56.117D for subsequent encounter - BILLABLE CODE

  • Use S56.117S for sequela - BILLABLE CODE

  • S56.118 for Strain of flexor muscle, fascia and tendon of left little finger at forearm level - NON-BILLABLE CODE

  • Use S56.118A for initial encounter - BILLABLE CODE

  • Use S56.118D for subsequent encounter - BILLABLE CODE

  • Use S56.118S for sequela - BILLABLE CODE

  • S56.119 for Strain of flexor muscle, fascia and tendon of finger of unspecified finger at forearm level - NON-BILLABLE CODE

  • Use S56.119A for initial encounter - BILLABLE CODE

  • Use S56.119D for subsequent encounter - BILLABLE CODE

  • Use S56.119S for sequela - BILLABLE CODE

  • S56.12 for Laceration of flexor muscle, fascia and tendon of other and unspecified finger at forearm level - NON-BILLABLE CODE

  • S56.121 for Laceration of flexor muscle, fascia and tendon of right index finger at forearm level - NON-BILLABLE CODE

  • Use S56.121A for initial encounter - BILLABLE CODE

  • Use S56.121D for subsequent encounter - BILLABLE CODE

  • Use S56.121S for sequela - BILLABLE CODE

  • S56.122 for Laceration of flexor muscle, fascia and tendon of left index finger at forearm level - NON-BILLABLE CODE

  • Use S56.122A for initial encounter - BILLABLE CODE

  • Use S56.122D for subsequent encounter - BILLABLE CODE

  • Use S56.122S for sequela - BILLABLE CODE

  • S56.123 for Laceration of flexor muscle, fascia and tendon of right middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.123A for initial encounter - BILLABLE CODE

  • Use S56.123D for subsequent encounter - BILLABLE CODE

  • Use S56.123S for sequela - BILLABLE CODE

  • S56.124 for Laceration of flexor muscle, fascia and tendon of left middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.124A for initial encounter - BILLABLE CODE

  • Use S56.124D for subsequent encounter - BILLABLE CODE

  • Use S56.124S for sequela - BILLABLE CODE

  • S56.125 for Laceration of flexor muscle, fascia and tendon of right ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.125A for initial encounter - BILLABLE CODE

  • Use S56.125D for subsequent encounter - BILLABLE CODE

  • Use S56.125S for sequela - BILLABLE CODE

  • S56.126 for Laceration of flexor muscle, fascia and tendon of left ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.126A for initial encounter - BILLABLE CODE

  • Use S56.126D for subsequent encounter - BILLABLE CODE

  • Use S56.126S for sequela - BILLABLE CODE

  • S56.127 for Laceration of flexor muscle, fascia and tendon of right little finger at forearm level - NON-BILLABLE CODE

  • Use S56.127A for initial encounter - BILLABLE CODE

  • Use S56.127D for subsequent encounter - BILLABLE CODE

  • Use S56.127S for sequela - BILLABLE CODE

  • S56.128 for Laceration of flexor muscle, fascia and tendon of left little finger at forearm level - NON-BILLABLE CODE

  • Use S56.128A for initial encounter - BILLABLE CODE

  • Use S56.128D for subsequent encounter - BILLABLE CODE

  • Use S56.128S for sequela - BILLABLE CODE

  • S56.129 for Laceration of flexor muscle, fascia and tendon of unspecified finger at forearm level - NON-BILLABLE CODE

  • Use S56.129A for initial encounter - BILLABLE CODE

  • Use S56.129D for subsequent encounter - BILLABLE CODE

  • Use S56.129S for sequela - BILLABLE CODE

  • S56.19 for Other injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level - NON-BILLABLE CODE

  • S56.191 for Other injury of flexor muscle, fascia and tendon of right index finger at forearm level - NON-BILLABLE CODE

  • Use S56.191A for initial encounter - BILLABLE CODE

  • Use S56.191D for subsequent encounter - BILLABLE CODE

  • Use S56.191S for sequela - BILLABLE CODE

  • S56.192 for Other injury of flexor muscle, fascia and tendon of left index finger at forearm level - NON-BILLABLE CODE

  • Use S56.192A for initial encounter - BILLABLE CODE

  • Use S56.192D for subsequent encounter - BILLABLE CODE

  • Use S56.192S for sequela - BILLABLE CODE

  • S56.193 for Other injury of flexor muscle, fascia and tendon of right middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.193A for initial encounter - BILLABLE CODE

  • Use S56.193D for subsequent encounter - BILLABLE CODE

  • Use S56.193S for sequela - BILLABLE CODE

  • S56.194 for Other injury of flexor muscle, fascia and tendon of left middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.194A for initial encounter - BILLABLE CODE

  • Use S56.194D for subsequent encounter - BILLABLE CODE

  • Use S56.194S for sequela - BILLABLE CODE

  • S56.195 for Other injury of flexor muscle, fascia and tendon of right ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.195A for initial encounter - BILLABLE CODE

  • Use S56.195D for subsequent encounter - BILLABLE CODE

  • Use S56.195S for sequela - BILLABLE CODE

  • S56.196 for Other injury of flexor muscle, fascia and tendon of left ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.196A for initial encounter - BILLABLE CODE

  • Use S56.196D for subsequent encounter - BILLABLE CODE

  • Use S56.196S for sequela - BILLABLE CODE

  • S56.197 for Other injury of flexor muscle, fascia and tendon of right little finger at forearm level - NON-BILLABLE CODE

  • Use S56.197A for initial encounter - BILLABLE CODE

  • Use S56.197D for subsequent encounter - BILLABLE CODE

  • Use S56.197S for sequela - BILLABLE CODE

  • S56.198 for Other injury of flexor muscle, fascia and tendon of left little finger at forearm level - NON-BILLABLE CODE

  • Use S56.198A for initial encounter - BILLABLE CODE

  • Use S56.198D for subsequent encounter - BILLABLE CODE

  • Use S56.198S for sequela - BILLABLE CODE

  • S56.199 for Other injury of flexor muscle, fascia and tendon of unspecified finger at forearm level - NON-BILLABLE CODE

  • Use S56.199A for initial encounter - BILLABLE CODE

  • Use S56.199D for subsequent encounter - BILLABLE CODE

  • Use S56.199S for sequela - BILLABLE CODE

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:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

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 :

  • Tendinitis and bursitis
  • Sprains
  • Dislocations
  • Fractures (broken bones)
  • Nerve problems
  • Osteoarthritis

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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.