Specifications Manual for Joint Commission National Quality Measures (v2018B)
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Release Notes:
Data Element
Version 2018B

Data Element Name: Pre-Stroke Modified Rankin Score (mRS)
Collected For: CSTK-10
Definition:The pre-stroke Modified Rankin Score (mRS) is an estimated score used to assess the patient’s pre-stroke level of function. An estimated mRS should be abstracted from current medical record documentation about the patient’s ability to perform activities of daily living prior to the hospitalization for the acute ischemic stroke event.
Suggested Data Collection Question:What is the patient's pre-stroke Modified Rankin Score (mRS)?
Allowable Values:

0  The patient had no residual symptoms.

1  The patient had no significant disability; able to carry out all activities.

2  The patient had slight disability; unable to carry out all activities but able to look after self without daily help.

3  The patient had moderate disability; requiring some external help but able to walk without the assistance of another individual.

4  The patient had moderately severe disability; unable to walk or attend to bodily functions without assistance of another individual.

5  The patient had severe disability; bedridden, incontinent, requires continuous care.

6  Unable to determine (UTD) from the medical record documentation.
Notes for Abstraction:
  • Use all available documentation in the current medical record to estimate a score and select a pre-stroke mRS value. mRS values documented during previous episodes of care may not be valid. Use only current data/information.
  • Documentation about the patient’s family and living situation may reflect the patient’s level of function prior to the hospital admission.
  • If documentation reflects that the patient was able to ambulate independently (no help form another person) with or without an assistive device, select value ‘0’, ‘1’, ‘2’, or ‘3’ based on the patient's level of disability.
  • If the patient was able to walk with the assistance of another person, select value ‘4’.
  • If the patient was unable to ambulate prior to the hospitalization, select value ‘5’.
  • Select the value (values 0-5) that best represents the patient’s pre-stroke level of function.
  • No value should be selected more than once.
  • If more than one value is estimated, select the highest value.
  • If a score range is estimated, e.g. 2-3, select the higher value.
  • If a pre-stroke mRS cannot be determined (UTD) from current medical record documentation, select “6”.
  • If value 6 (UTD) is selected, no other values should be selected.

Suggested Data Sources:

  • Consultation notes
  • Emergency department record
  • History and physical
  • Progress notes
  • Discharge summary
  • Admission note
Additional Notes:
Guidelines for Abstraction:
Inclusion Exclusion
None None

Pre-Stroke Modified Rankin Score (mRS)
Specifications Manual for Joint Commission National Quality Measures (v2018B)
Discharges 01-01-19 (1Q19) through 06-30-19 (2Q19)