S39.012A Strain of muscle, fascia and tendon of lower back, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S39.012 with 7th character A (initial encounter).

Applies from S39 Other and unspecified injuries of abdomen, lower back, pelvis and external genitals

Excludes2 (not included here)

• sprain of joints and ligaments of lumbar spine and pelvis (S33.-)

Code also

• any associated open wound (S31.-)

7th character note

• The appropriate 7th character is to be added to each code from category S39

7th character required

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

Code annotations containing back-references to S39.012A

Back-references to S39.012

• Type 1 Excludes: M54.5 Low back pain ("low back strain (S39.012)")

Back-references to S39.01

• Type 2 Excludes: S33 Dislocation and sprain of joints and ligaments of lumbar spine and pelvis ("strain of muscle of lower back and pelvis (S39.01-)")

Diagnosis Index entries for S39.012A

• Injury › muscle (and fascia) (and tendon) › lower back › strain
• Strain › back
• Strain › low back

Nearby codes

• S39.011 Strain of muscle, fascia and tendon of abdomen
• S39.011A Strain of muscle, fascia and tendon of abdomen, initial encounter
• S39.011D Strain of muscle, fascia and tendon of abdomen, subsequent encounter
• S39.011S Strain of muscle, fascia and tendon of abdomen, sequela
• S39.012 Strain of muscle, fascia and tendon of lower back
• S39.012A Strain of muscle, fascia and tendon of lower back, initial encounter (this code)
• S39.012D Strain of muscle, fascia and tendon of lower back, subsequent encounter
• S39.012S Strain of muscle, fascia and tendon of lower back, sequela
• S39.013 Strain of muscle, fascia and tendon of pelvis
• S39.013A Strain of muscle, fascia and tendon of pelvis, initial encounter
• S39.013D Strain of muscle, fascia and tendon of pelvis, subsequent encounter