2021 ICD-10-CM Code S86.099S

Other specified injury of unspecified Achilles tendon, sequela

Version 2021
Billable Code
7th Character Code
Unspecified Code
Sequela Code
MS-DRG Mapping
POA Exempt

Valid for Submission

S86.099S is a billable diagnosis code used to specify a medical diagnosis of other specified injury of unspecified achilles tendon, sequela. The code S86.099S is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code S86.099S might also be used to specify conditions or terms like complete division, flexor tendon, foot, complete division, tendo calcaneus , injury of achilles tendon or traumatic division of tendo achilles. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

S86.099S is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like other specified injury of unspecified achilles tendon. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.

Unspecified diagnosis codes like S86.099S are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

ICD-10:S86.099S
Short Description:Oth injury of unspecified Achilles tendon, sequela
Long Description:Other specified injury of unspecified Achilles tendon, sequela

Code Classification

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Present on Admission (POA)

S86.099S is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here .

CMS POA Indicator Options and Definitions
POA Indicator CodePOA Reason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert S86.099S to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S86.099S its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Heel Injuries and Disorders

Heel problems are common and can be painful. Often, they result from too much stress on your heel bone and the tissues that surround it. That stress can come from

These can lead to tendinitis, bursitis, and fasciitis, which are all types of inflammation of the tissues that surround your heel. Over time the stress can cause bone spurs and deformities. Certain diseases, such as rheumatoid arthritis and gout, can also lead to heel problems. Treatments for heel problems might include rest, medicines, exercises, taping, and special shoes. Surgery is rarely needed.


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)