2027 ICD-10-CM Diagnosis Code R46.1Bizarre personal appearance
ICD-10-CM Codes›R00–R99›R40-R46›R46
- Billable — Valid for Submission
- Not Chronic
R46.1 is a billable ICD-10-CM diagnosis code for bizarre personal appearance. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. 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 Symptoms of mental and substance use conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bizarre personal appearance
- Clothing disheveled
- Disturbance in appearance
- Dressed - appearance
- Inadequately dressed
- Inappropriately dressed
- Neglected appearance
- Personal appearance dirty
- Wearing diaper only
- Wearing only underwear
- Wears daywear during the night
- Wears many layers of clothing
- Wears nightwear during the day
- Wears nightwear under daywear
- Wears unlaundered clothes
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R46.1: its own notes plus those printed at R46, block R40-R46, and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
bizarre R46.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Mental Disorders
Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..
The full article covers:
- What are mental disorders?
- What are some types of mental disorders?
- What causes mental disorders?
- Who is at risk for mental disorders?
- How are mental disorders diagnosed?
- What are the treatments for mental disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R46.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R46.1Overview
What is the ICD-10 code for bizarre personal appearance?
The ICD-10-CM code for bizarre personal appearance is R46.1 (sometimes written as R461). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R46.1 (Symptoms and signs involving appearance and behavior) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report bizarre personal appearance on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R46.1 group to?
When bizarre personal appearance is the principal diagnosis on an inpatient stay, it groups to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.
Can R46.1 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the bizarre personal appearance is established, that condition takes the principal position instead.
What is the ICD-9 equivalent of R46.1?
Under the General Equivalence Mappings, bizarre personal appearance converts to ICD-9-CM 799.89 (ill-define condition NEC). The mapping is approximate, so confirm the match fits the documentation.
