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ICD-10-CM Codes
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2023 ICD-10-CM Diagnosis Code R63.6
2023 ICD-10-CM Diagnosis Code R63.6
Underweight
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- R63.6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM R63.6 became effective on October 1, 2022.
- This is the American ICD-10-CM version of R63.6 - other international versions of ICD-10 R63.6 may differ.
Use AdditionalUse Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R63.6. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
The following code(s) above
R63.6 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
R63.6:
- Underweight in childhood with bmi between 0 to 4 percentile
- Underweight, pediatrics (0-4 bmi percentile)
ICD-10-CM R63.6 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
- 641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc
Convert R63.6 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
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To R63.6
R63.3 Feeding difficulties
R63.31 Pediatric feeding disorder, acute
R63.32 Pediatric feeding disorder, chronic
R63.39 Other feeding difficulties
R63.4 Abnormal weight loss
R63.5 Abnormal weight gain
R63.6
Underweight
R63.8 Other symptoms and signs concerning food and fluid intake
R65 Symptoms and signs specifically associated with systemic inflammation and infection
R65.1 Systemic inflammatory response syndrome (SIRS) of non-infectious origin
R65.10 …… without acute organ dysfunction
R65.11 …… with acute organ dysfunction
R65.20 …… without septic shock
R68 Other general symptoms and signs
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
