2021 ICD-10-CM Code S01.90XD

Unspecified open wound of unspecified part of head, subsequent encounter

  1. ICD-10-CM Index
  2. Chapter: S00–T98
  3. Section: S00-S09
  4. Block: S01
  5. S01.90XD - Unsp open wound of unspecified part of head, subs encntr
Version 2021
Billable Code
7th Character Code
Unspecified Code
Subsequent Code
MS-DRG Mapping
POA Exempt

Valid for Submission

S01.90XD is a billable diagnosis code used to specify a medical diagnosis of unspecified open wound of unspecified part of head, subsequent encounter. The code S01.90XD 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 S01.90XD might also be used to specify conditions or terms like brain contusion with open intracranial wound, with more than 1 hour loss of consciousness, brain contusion with open intracranial wound, with no loss of consciousness, brain injury with open intracranial wound and concussion, brain injury with open intracranial wound and loss of consciousness, brain injury with open intracranial wound and no loss of consciousness , brain stem contusion, etc. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

S01.90XD is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like unspecified open wound of unspecified part of head. According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or recovery phase of treatment. Subsequent diagnosis codes are appropriate during the recovery phase, no matter how many times the patient has seen the provider for this condition. If the provider needs to adjust the patient's care plan due to a setback or other complication, the encounter becomes active again.

Unspecified diagnosis codes like S01.90XD 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:S01.90XD
Short Description:Unsp open wound of unspecified part of head, subs encntr
Long Description:Unspecified open wound of unspecified part of head, subsequent encounter

Code Classification

Coding Guidelines

The appropriate 7th character is to be added to each code from block Open wound of head (S01). Use the following options for the aplicable episode of care:

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)

S01.90XD 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 S01.90XD to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S01.90XD 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


Wounds and Injuries

Also called: Traumatic injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening. Injuries can happen at work or play, indoors or outdoors, driving a car, or walking across the street.

Wounds are injuries that break the skin or other body tissues. They include cuts, scrapes, scratches, and punctured skin. They often happen because of an accident, but surgery, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but it is important to clean them. Serious and infected wounds may require first aid followed by a visit to your doctor. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.

Other common types of injuries include


[Learn More in MedlinePlus]

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)

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