ICD-10-CM Codes
R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior
R45- Symptoms and signs involving emotional state
2021 ICD-10-CM Diagnosis Code R45.84

2021 ICD-10-CM Diagnosis Code R45.84

Anhedonia

2016

2017

2018

2019

2020

2021

Billable/Specific Code

R45.84 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM R45.84 became effective on October 1, 2020.
This is the American ICD-10-CM version of R45.84 - other international versions of ICD-10 R45.84 may differ.

The following code(s) above R45.84 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to R45.84:

R00-R99
2021 ICD-10-CM Range R00-R99
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Note
- 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.
Type 2 Excludes
- abnormal findings on antenatal screening of mother (O28.-)
- certain conditions originating in the perinatal period (P04-P96)
- signs and symptoms classified in the body system chapters
- signs and symptoms of breast (N63, N64.5)
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R40-R46
2021 ICD-10-CM Range R40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior
Type 2 Excludes
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
Symptoms and signs involving cognition, perception, emotional state and behavior

Clinical Information

An inability to experience pleasure.
Inability to experience pleasure due to impairment or dysfunction of normal psychological and neurobiological mechanisms. It is a symptom of many psychotic disorders (e.g., depressive disorder, major; and schizophrenia).
Loss or absence of ability to experience pleasure.

ICD-10-CM R45.84 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

947 Signs and symptoms with mcc
948 Signs and symptoms without mcc

Convert R45.84 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

Code annotations containing back-references to R45.84:

Type 1 Excludes: R45.3

ICD-10-CM Diagnosis Code R45.3
Demoralization and apathy
Type 1 Excludes
- anhedonia (R45.84)

Diagnosis Index entries containing back-references to R45.84:

Anhedonia R45.84

ICD-10-CM Codes Adjacent To R45.84

R45.2 Unhappiness

R45.3 Demoralization and apathy

R45.4 Irritability and anger

R45.5 Hostility

R45.6 Violent behavior

R45.7 State of emotional shock and stress, unspecified

R45.8 Other symptoms and signs involving emotional state

R45.81 Low self-esteem

R45.82 Worries

R45.83 Excessive crying of child, adolescent or adult

R45.84 Anhedonia

R45.85 Homicidal and suicidal ideations

R45.850 Homicidal ideations

R45.851 Suicidal ideations

R45.86 Emotional lability

R45.87 Impulsiveness

R45.89 Other symptoms and signs involving emotional state

R46 Symptoms and signs involving appearance and behavior

R46.0 Very low level of personal hygiene

R46.1 Bizarre personal appearance

R46.2 Strange and inexplicable behavior

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code R45.84

Anhedonia

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Symptoms and signs involving cognition, perception, emotional state and behavior

Demoralization and apathy