Alphabetic Index FY2027

S83.209S

Unspecified tear of unspecified meniscus, current injury, unspecified knee, sequela

FY2027Chapter 19: Injury, poisoning and certain other consequences of external causes/S80–S89 Injuries to the knee and lower leg

BillableComplete code, valid to report

S83.209S (also written S83209S) is a billable ICD-10-CM diagnosis code for unspecified tear of unspecified meniscus, current injury, unspecified knee, sequela. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 351 codes in category S83 (Dislocation and sprain of joints and ligaments of knee). The Alphabetic Index lists it under 1 entry. Its 7th character, S, means sequela. Its coding notes include a Use additional code instruction, a Code also instruction, 1 Excludes1 entry and 13 Excludes2 entries.

7th character

Category S83 requires a 7th character.

Assembled code S83.209S Open code

Guidelines tips

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

The 7th character depends on whether the patient is in active treatment, not on who sees the patient. An aftercare Z code is not used for injury aftercare.

Guidelines I.C.19.aInjuries: application of 7th charactersRead the official text

Each injury gets its own code unless a combination code exists, with the most serious injury first. Superficial injuries at the same site as a more severe injury are not coded. Injuries during medical care are coded as complications.

Guidelines I.C.19.bCoding of injuriesRead the official text

Use additional code

Add the listed code as a secondary code, if known.

Also from chapter/block level (1 note)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

Inherited from S83 Dislocation and sprain of joints and ligaments of knee
  • any associated open wound

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from S83.2 Tear of meniscus, current injury
  • old bucket-handle tear (M23.2)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from S83 Dislocation and sprain of joints and ligaments of knee
  • 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.-)
Also from chapter/block level (6 notes)
Inherited from S80–S89 Injuries to the knee and lower leg
  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
  • insect bite or sting, venomous (T63.4)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Includes

Further defines or gives examples of the content of the category.

Inherited from S83 Dislocation and sprain of joints and ligaments of knee
  • 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

Notes

Also from chapter/block level (2 notes)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Alphabetic Index terms

Terms the official Alphabetic Index lists for S83.209. This code adds the 7th character. 1 entry