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

S33.5XXA

ICD-10 Chapter 19: Injury & Poisoning — illustrative image — Chapter 19: Injury, poisoning and certain other consequences of external causes (S00–T88) — illustrative image

What this code means

A sprain of the ligaments of the lumbar spine (lower back), at the first encounter.

Also called: lumbar sprain, lower back sprain.

When this code is used

Used for sprain of ligaments of lumbar spine, initial encounter.

Where it sits in ICD-10-CM

Code S33.5XXA belongs to Chapter 19: Injury, poisoning and certain other consequences of external causes, which covers codes S00–T88 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Back pain

Frequently asked questions

What is ICD-10-CM code S33.5XXA?

S33.5XXA is the ICD-10-CM diagnosis code for “Sprain of ligaments of lumbar spine, initial encounter”. A sprain of the ligaments of the lumbar spine (lower back), at the first encounter.

When is code S33.5XXA used?

Used for sprain of ligaments of lumbar spine, initial encounter. It belongs to Chapter 19 of ICD-10-CM (Injury, poisoning and certain other consequences of external causes).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.