Injury of muscle, fascia and tendon at forearm level
In Injuries to the elbow and forearm (S50-S59), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes
432 billable codes under S56: 36 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Also applies, from Injuries to the elbow and forearm (S50-S59)
These notes sit on S50-S59 and apply to every code under it, including S56.
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers 7th character use and coding of injuries, fractures, burns, drug and toxic effects, abuse and neglect, and complications of care (S00-T88).
- Application of 7th Characters in Chapter 19 (page 77)
- Coding of Injuries (page 78)
- Coding of Traumatic Fractures (page 79)
- Coding of Burns and Corrosions (page 80)
- Adverse Effects, Poisoning, Underdosing and Toxic Effects (page 82)
- Adult and child abuse, neglect and other maltreatment (page 85)
- Complications of care (page 85)
Codes under S56
S56 can't be used on a claim. Pick a billable code below; grey headings group them.
- S56.0Injury of flexor muscle, fascia and tendon of thumb at forearm level
- S56.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level
- S56.2Injury of other flexor muscle, fascia and tendon at forearm level
- S56.3Injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level
- S56.4Injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level
- S56.5Injury of other extensor muscle, fascia and tendon at forearm level
- S56.8Injury of other muscles, fascia and tendons at forearm level
- S56.9Injury of unspecified muscles, fascia and tendons at forearm level
S56 MS-DRGs
As the principal diagnosis, the billable codes under S56 group to these 14 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 913 Traumatic Injury with MCC (144 of 432 codes)
- DRG 914 Traumatic Injury without MCC (144 of 432 codes)
- DRG 949 Aftercare with CC/MCC (144 of 432 codes)
- DRG 950 Aftercare without CC/MCC (144 of 432 codes)
- DRG 963 Other Multiple Significant Trauma with MCC (144 of 432 codes)
- DRG 964 Other Multiple Significant Trauma with CC (144 of 432 codes)
- DRG 965 Other Multiple Significant Trauma without CC/MCC (144 of 432 codes)
- DRG 562 Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCC (72 of 432 codes)
- DRG 563 Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCC (72 of 432 codes)
- DRG 564 Other Musculoskeletal System and Connective Tissue Diagnoses with MCC (36 of 432 codes)
- DRG 565 Other Musculoskeletal System and Connective Tissue Diagnoses with CC (36 of 432 codes)
- DRG 566 Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC (36 of 432 codes)
- DRG 604 Trauma to the Skin, Subcutaneous Tissue and Breast with MCC (36 of 432 codes)
- DRG 605 Trauma to the Skin, Subcutaneous Tissue and Breast without MCC (36 of 432 codes)
Other codes that refer to S56
Notes on these codes point to S56.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about arm injuries and disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.