S83.511A — Sprain of anterior cruciate ligament of right knee, initial encounter
S83.511A

What this code means
A sprain (tear) of the anterior cruciate ligament (ACL) of the right knee, at the first encounter.
Also called: acl tear, anterior cruciate ligament sprain.
When this code is used
Used for sprain of anterior cruciate ligament of right knee, initial encounter.
Where it sits in ICD-10-CM
Code S83.511A 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.
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Frequently asked questions
What is ICD-10-CM code S83.511A?
S83.511A is the ICD-10-CM diagnosis code for “Sprain of anterior cruciate ligament of right knee, initial encounter”. A sprain (tear) of the anterior cruciate ligament (ACL) of the right knee, at the first encounter.
When is code S83.511A used?
Used for sprain of anterior cruciate ligament of right knee, 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.
More codes in Chapter 19
S00.93XA — Contusion of unspecified part of head, initial encounter
S01.01XA — Laceration without foreign body of scalp, initial encounter
S02.2XXA — Fracture of nasal bones, initial encounter for closed fracture
S05.01XA — Injury of conjunctiva and corneal abrasion without foreign body, right eye, initial encounter
S06.0X0A — Concussion without loss of consciousness, initial encounter
S09.90XA — Unspecified injury of head, initial encounter