2023

  1. ICD-10-CM Codes
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  2. R00-R99
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  3. R10-R19
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  4. R16-
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  5. 2023 ICD-10-CM Diagnosis Code R16.1

2023 ICD-10-CM Diagnosis Code R16.1

Splenomegaly, not elsewhere classified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • R16.1 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 R16.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of R16.1 - other international versions of ICD-10 R16.1 may differ.
Applicable To
  • Splenomegaly NOS
The following code(s) above R16.1 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 R16.1:
  • R00-R99
    2023 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
  • R10-R19
    2023 ICD-10-CM Range R10-R19

    Symptoms and signs involving the digestive system and abdomen

    Type 2 Excludes
    • congenital or infantile pylorospasm (Q40.0)
    • gastrointestinal hemorrhage (K92.0-K92.2)
    • intestinal obstruction (K56.-)
    • newborn gastrointestinal hemorrhage (P54.0-P54.3)
    • newborn intestinal obstruction (P76.-)
    • pylorospasm (K31.3)
    • signs and symptoms involving the urinary system (R30-R39)
    • symptoms referable to female genital organs (N94.-)
    • symptoms referable to male genital organs (N48-N50)
    Symptoms and signs involving the digestive system and abdomen
Approximate Synonyms
  • Mass of spleen
  • Splenic mass
  • Splenomegaly
  • Splenomegaly (enlarged spleen)
Clinical Information
  • Abnormal enlargement of the spleen.
  • Enlarged spleen.
  • Enlargement of the spleen.
ICD-10-CM R16.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 814 Reticuloendothelial and immunity disorders with mcc
  • 815 Reticuloendothelial and immunity disorders with cc
  • 816 Reticuloendothelial and immunity disorders without cc/mcc

Convert R16.1 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
Code annotations containing back-references to R16.1:
  • Type 1 Excludes: D73.1
    ICD-10-CM Diagnosis Code D73.1

    Hypersplenism

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Type 1 Excludes
    • neutropenic splenomegaly (D73.81)
    • primary splenic neutropenia (D73.81)
    • splenitis, splenomegaly in late syphilis (A52.79)
    • splenitis, splenomegaly in tuberculosis (A18.85)
    • splenomegaly NOS (R16.1)
    • splenomegaly congenital (Q89.0)

Diagnosis Index entries containing back-references to R16.1:

ICD-10-CM Codes Adjacent To R16.1
R14.1 Gas pain
R14.2 Eructation
R14.3 Flatulence
R15 Fecal incontinence
R15.0 Incomplete defecation
R15.1 Fecal smearing
R15.2 Fecal urgency
R15.9 Full incontinence of feces
R16 Hepatomegaly and splenomegaly, not elsewhere classified
R16.0 Hepatomegaly, not elsewhere classified
R16.1 Splenomegaly, not elsewhere classified
R16.2 Hepatomegaly with splenomegaly, not elsewhere classified
R17 Unspecified jaundice
R18 Ascites
R18.0 Malignant ascites
R18.8 Other ascites
R19 Other symptoms and signs involving the digestive system and abdomen
R19.0 Intra-abdominal and pelvic swelling, mass and lump
R19.00 …… unspecified site
R19.01 Right upper quadrant abdominal swelling, mass and lump
R19.02 Left upper quadrant abdominal swelling, mass and lump

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

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