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ICD-10-CM 2027 diagnosis code

R29.74NIHSS score 40-42

Not billable — use a more specific code

R29.74 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R29.74

R29.74 is the ICD-10-CM diagnosis code for NIHSS score 40-42. It belongs to category R29 (other symptoms and signs involving the nervous and musculoskeletal systems), block R25-R29 (symptoms and signs involving the nervous and musculoskeletal systems) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within R29.7 (National Institutes of Health Stroke Scale (NIHSS) score), R29.74 is specifically for NIHSS score 40-42. Related codes cover 0-9 (R29.70), 10-19 (R29.71), 20-29 (R29.72) and 30-39 (R29.73).

To report this condition, pick the subcode that matches the documentation: R29.740 (40), R29.741 (41) and R29.742 (42).

It was added in FY2017, effective October 1, 2016.

Specific codes under R29.74

Notes that apply from higher levels

Instructions written at a parent level also apply to R29.74.

› From R29.7 National Institutes of Health Stroke Scale (NIHSS) score
Code first
  • the type of cerebral infarction (I60.-, I61.-, I62.-, I63.-)

Broader instructions also apply from Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about R29.74

Is R29.74 billable?

No. R29.74 is a header code. Report one of its more specific subcodes instead.