2026 ICD-10-CM Diagnosis Code R68.83Chills (without fever)
ICD-10-CM Codes›R00–R99›R50-R69›R68
- Billable — Valid for Submission
- Not Chronic
R68.83 is a billable ICD-10-CM diagnosis code for chills (without fever). It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 947 through 948. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as chill. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chill
- Shivering or rigors
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Chills NOS
Type 1 Excludes
- chills with fever R50.9
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Chill (s) - R68.83
- without fever - R68.83
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Chill(s)
- Chill(s)
- without fever
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Chills
the sudden sensation of being cold. it may be accompanied by shivering.Shivering
involuntary contraction or twitching of the muscles. it is a physiologic method of heat production in man and other mammals.
Convert R68.83 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R68.83Overview
Is R68.83 (Other general symptoms and signs) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chills (without fever) on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does R68.83 group to?
When chills (without fever) is the principal diagnosis on an inpatient stay, it groups to MS-DRG 947, 948, with relative weights from 0.8005 to 1.2694 depending on complications. Higher weights mean higher Medicare reimbursement.
Can R68.83 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the chills (without fever) is established, that condition takes the principal position instead.
What is the ICD-9 equivalent of R68.83?
Under the General Equivalence Mappings, chills (without fever) converts to ICD-9-CM 780.64 (chills (without fever)). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
