ICD-10-CM 2027 diagnosis code

S83.522Sprain of posterior cruciate ligament of left knee

Not billable — use a more specific codeRequires 7th character

S83.522 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S83.522

S83.522 is the ICD-10-CM diagnosis code for sprain of posterior cruciate ligament of left knee. It belongs to category S83 (dislocation and sprain of joints and ligaments of knee), block S80-S89 (injuries to the knee and lower leg) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S83.52 (sprain of posterior cruciate ligament of knee), S83.522 is specifically for sprain of posterior cruciate ligament of left knee. Related codes cover right knee (S83.521) and unspecified knee (S83.529).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category S83

Ainitial encounterS83.522A
Dsubsequent encounterS83.522D
SsequelaS83.522S

Notes that apply from higher levels

Instructions written at a parent level also apply to S83.522.

› From S83 Dislocation and sprain of joints and ligaments of knee

Includes

avulsion of joint or ligament of knee
laceration of cartilage, joint or ligament of knee
sprain of cartilage, joint or ligament of knee
traumatic hemarthrosis of joint or ligament of knee
traumatic rupture of joint or ligament of knee
traumatic subluxation of joint or ligament of knee
traumatic tear of joint or ligament of knee

Excludes2

derangement of patella (M22.0-M22.3)
injury of patellar ligament (tendon) (S76.1-)
internal derangement of knee (M23.-)
old dislocation of knee (M24.36)
pathological dislocation of knee (M24.36)
recurrent dislocation of knee (M22.0)
strain of muscle, fascia and tendon of lower leg (S86.-)

Code also

any associated open wound

Broader instructions also apply from S80-S89 Injuries to the knee and lower leg and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Code history

2016
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2021
2022
2023
2024
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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about S83.522

Is S83.522 billable?: No. S83.522 is a header code. Report one of its more specific subcodes instead.