S33.5XXA  – Sprain of ligaments of lumbar spine, initial encounter

S33.5XXA – Sprain of ligaments of lumbar spine, initial encounter

Learn about ICD-10-CM code S33.5XXA for lumbar spine initial encounter, including clinical details, billing, synonyms, related codes, and FAQs.

By Chloe Smith on Aug 8, 2025.

Fact Checked by Karina Jimenea.

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S33.5XXA diagnosis code: sprain of ligaments of lumbar spine, initial encounter

The S33.5XXA is a code in the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM). It designates “sprain of ligaments of lumbar spine, initial encounter.” This specific diagnosis code captures injuries involving overstretching, tearing, or traumatic rupture of the ligaments of the lumbar spine, causing significant low back pain and possible limitation in motion.

Patients with a lumbar spine ligament sprain typically experience localized lower back pain accompanied by swelling in the affected area. The injury often results in a decreased range of motion, making movements painful or restricted. Additionally, muscle spasms frequently occur, further intensifying discomfort. Pain is usually exacerbated upon movement or when performing certain physical activities.

Is the S33.5XXA billable?

Yes, S33.5XXA is a billable ICD-10-CM diagnosis code. Healthcare providers use this code for reimbursement when documenting initial evaluations, treatment, and diagnosis of lumbar ligament sprains.

S33.5XXA clinical information

The ICD-10 code S33.5XXA is used for diagnosing a sprain involving the lumbar ligaments, often due to sudden movements, trauma, lifting heavy objects incorrectly, or sports-related injuries. Clinically, the patient typically presents with:

  • Acute low back pain
  • Restricted range of motion in the lumbar spine and pelvis
  • Tenderness in the lumbar region
  • Difficulty with bending or twisting motions
  • Potential muscle spasms in surrounding areas

Differentiation from other related conditions, such as intervertebral disc disorders, intervertebral disc displacement, sciatica, radiculopathy, intervertebral disc degeneration, or spondylosis, is essential to establish accurate treatment plans.

Typically, sprains require rest. Patients with lumbar spine ligament sprains should also rest, but at a certain point, they need to start being active because being stationary won't do them any good. Given this, exercise and physical therapy are often part of treatment plans. Anti-inflammatory medication is also used to treat it.

S33.5XXA synonyms include

  • Lumbar spine sprain
  • Lumbar sprain

Other ICD-10 codes commonly used for lumbar spine problems

Other common ICD-10-CM codes associated with lumbar spine injuries or conditions include:

  • S33.0XXA: Traumatic rupture of lumbar intervertebral disc, initial encounter
  • S33.100A: Subluxation of unspecified lumbar vertebra, initial encounter
  • S33.101A: Dislocation of unspecified lumbar vertebra, initial encounter
  • S33.110A: Subluxation of L1/L2 lumbar vertebra, initial encounter
  • S33.111A: Dislocation of L1/L2 lumbar vertebra, initial encounter
  • S33.120A: Subluxation of L2/L3 lumbar vertebra, initial encounter
  • S33.121A: Dislocation of L2/L3 lumbar vertebra, initial encounter
  • S33.130A: Subluxation of L3/L4 lumbar vertebra, initial encounter
  • S33.131A: Dislocation of L3/L4 lumbar vertebra, initial encounter
  • S33.140A: Subluxation of L4/L5 lumbar vertebra, initial encounter
  • S33.141A: Dislocation of L4/L5 lumbar vertebra, initial encounter

Healthcare providers should differentiate S33.5XXA from these related codes by accurate documentation.

Commonly asked questions

Yes, S33.5XXA is billable and valid for reimbursement purposes. It describes explicitly an initial encounter for a lumbar ligament sprain.

The ICD-10-CM diagnosis code S33.5XXA indicates an initial medical evaluation and management of a sprain involving ligaments in the lumbar spine, typically due to trauma or sudden movements.

Treatments include rest, ice or heat therapy, anti-inflammatory medications, physical therapy, gentle stretching exercises, and occasionally immobilization using braces or supports.

Related ICDs

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