2027 ICD-10-CM Diagnosis Code R29.730NIHSS score 30
R29.730 is a billable ICD-10-CM diagnosis code for NIHSS score 30. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cerebral infarction.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for R29.730.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R29.730: its own notes plus those printed at R29.7 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Code First
The underlying condition named in the note is sequenced before this code.
Notes
General instructions on how these codes are used.
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name R29.730, its category, or a range that includes it.
Use Additional Code 4
These codes say to use an additional code from the note, and R29.730 is one of the codes named.
- I60 Nontraumatic subarachnoid hemorrhagecode, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) names R29.7-, which includes this code
- I61 Nontraumatic intracerebral hemorrhagecode, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) names R29.7-, which includes this code
- I62 Other and unspecified nontraumatic intracranial hemorrhagecode, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) names R29.7-, which includes this code
- I63 Cerebral infarctioncode, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) names R29.7-, which includes this code
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert R29.730 to ICD-9-CMHistory
Code HistoryHistory
Questions About R29.730Overview
What is the ICD-10 code for NIHSS score 30?
The ICD-10-CM code for NIHSS score 30 is R29.730 (sometimes written as R29730). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R29.730 (NIHSS score 30-39) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report NIHSS score 30 on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R29.730 group to?
On inpatient claims, NIHSS score 30 maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.
Can R29.730 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because NIHSS score 30 describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
