2021

  1. ICD-10-CM Codes
    2. ›
  2. S00-T88 Injury, poisoning and certain other consequences of external causes
    3. ›
  3. S10-S19 Injuries to the neck
    4. ›
  4. S13- Dislocation and sprain of joints and ligaments at neck level
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code S13.121A

2021 ICD-10-CM Diagnosis Code S13.121A

Dislocation of C1/C2 cervical vertebrae, initial encounter

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • S13.121A is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM S13.121A became effective on October 1, 2020.
  • This is the American ICD-10-CM version of S13.121A - other international versions of ICD-10 S13.121A may differ.
The following code(s) above S13.121A contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to S13.121A:
  • S00-T88
    2021 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • 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
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • S10-S19
    2021 ICD-10-CM Range S10-S19

    Injuries to the neck

    Includes
    • injuries of nape
    • injuries of supraclavicular region
    • injuries of throat
    Type 2 Excludes
    • burns and corrosions (T20-T32)
    • effects of foreign body in esophagus (T18.1)
    • effects of foreign body in larynx (T17.3)
    • effects of foreign body in pharynx (T17.2)
    • effects of foreign body in trachea (T17.4)
    • frostbite (T33-T34)
    • insect bite or sting, venomous (T63.4)
    Injuries to the neck
  • S13
    ICD-10-CM Diagnosis Code S13

    Dislocation and sprain of joints and ligaments at neck level

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code Also
    • any associated open wound
    Includes
    • avulsion of joint or ligament at neck level
    • laceration of cartilage, joint or ligament at neck level
    • sprain of cartilage, joint or ligament at neck level
    • traumatic hemarthrosis of joint or ligament at neck level
    • traumatic rupture of joint or ligament at neck level
    • traumatic subluxation of joint or ligament at neck level
    • traumatic tear of joint or ligament at neck level
    Type 2 Excludes
    • strain of muscle or tendon at neck level (S16.1)
    Dislocation and sprain of joints and ligaments at neck level
  • S13.1
    ICD-10-CM Diagnosis Code S13.1

    Subluxation and dislocation of cervical vertebrae

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code Also
    • any associated:
    • open wound of neck (S11.-)
    • spinal cord injury (S14.1-)
    Type 2 Excludes
    Subluxation and dislocation of cervical vertebrae
  • S13.12
    ICD-10-CM Diagnosis Code S13.12

    Subluxation and dislocation of C1/C2 cervical vertebrae

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Subluxation and dislocation of atlantoaxial joint
    Subluxation and dislocation of C1/C2 cervical vertebrae
Approximate Synonyms
  • Atlantoaxial dislocation
  • Dislocation of atlantoaxial joint
ICD-10-CM S13.121A is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 551 Medical back problems with mcc
  • 552 Medical back problems without mcc
  • 963 Other multiple significant trauma with mcc
  • 964 Other multiple significant trauma with cc
  • 965 Other multiple significant trauma without cc/mcc

Convert S13.121A to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To S13.121A
S13.111 Dislocation of C0/C1 cervical vertebrae
S13.111A …… initial encounter
S13.111D …… subsequent encounter
S13.111S …… sequela
S13.12 Subluxation and dislocation of C1/C2 cervical vertebrae
S13.120 Subluxation of C1/C2 cervical vertebrae
S13.120A …… initial encounter
S13.120D …… subsequent encounter
S13.120S …… sequela
S13.121 Dislocation of C1/C2 cervical vertebrae
S13.121A …… initial encounter
S13.121D …… subsequent encounter
S13.121S …… sequela
S13.13 Subluxation and dislocation of C2/C3 cervical vertebrae
S13.130 Subluxation of C2/C3 cervical vertebrae
S13.130A …… initial encounter
S13.130D …… subsequent encounter
S13.130S …… sequela
S13.131 Dislocation of C2/C3 cervical vertebrae
S13.131A …… initial encounter
S13.131D …… subsequent encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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