ICD-10-CM Codes
R00-R99
R50-R69
R59-
2023 ICD-10-CM Diagnosis Code R59

2023 ICD-10-CM Diagnosis Code R59

Enlarged lymph nodes

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

R59 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM R59 became effective on October 1, 2022.
This is the American ICD-10-CM version of R59 - other international versions of ICD-10 R59 may differ.

Type 1 Excludes

Type 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 R59. 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.

lymphadenitis NOS (
ICD-10-CM Diagnosis Code I88.9
Nonspecific lymphadenitis, unspecified
Applicable To
- Lymphadenitis NOS
I88.9
)
acute lymphadenitis (
ICD-10-CM Diagnosis Code L04
- L04 Acute lymphadenitis
  - L04.0 Acute lymphadenitis of face, head and neck
  - L04.1 Acute lymphadenitis of trunk
  - L04.2 Acute lymphadenitis of upper limb
  - L04.3 Acute lymphadenitis of lower limb
  - L04.8 Acute lymphadenitis of other sites
  - L04.9 Acute lymphadenitis, unspecified
L04.-
)
chronic lymphadenitis (
ICD-10-CM Diagnosis Code I88.1
Chronic lymphadenitis, except mesenteric
Applicable To
- Adenitis
- Lymphadenitis
I88.1
)
mesenteric (acute) (chronic) lymphadenitis (
ICD-10-CM Diagnosis Code I88.0
Nonspecific mesenteric lymphadenitis
Applicable To
- Mesenteric lymphadenitis (acute)(chronic)
I88.0
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

swollen glands

The following code(s) above R59 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 R59:

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

Clinical Information

A clinical finding indicating that a lymph node is enlarged. Causes include viral and bacterial infections and cancers that affect the lymph nodes.
Disease or swelling of the lymph nodes.
Lymphadenopathy: the abnormal enlargement of lymph nodes.

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 R59:

Type 1 Excludes: I88
, I89
, L04
, R22

ICD-10-CM Diagnosis Code I88
Nonspecific lymphadenitis
Type 1 Excludes
- acute lymphadenitis, except mesenteric (L04.-)
- enlarged lymph nodes NOS (R59.-)
- human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)
ICD-10-CM Diagnosis Code I89
Other noninfective disorders of lymphatic vessels and lymph nodes
Type 1 Excludes
- chylocele, tunica vaginalis (nonfilarial) NOS (N50.89)
- enlarged lymph nodes NOS (R59.-)
- filarial chylocele (B74.-)
- hereditary lymphedema (Q82.0)
ICD-10-CM Diagnosis Code L04
Acute lymphadenitis
Includes
- abscess (acute) of lymph nodes, except mesenteric
- acute lymphadenitis, except mesenteric
Type 1 Excludes
- chronic or subacute lymphadenitis, except mesenteric (I88.1)
- enlarged lymph nodes (R59.-)
- human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)
- lymphadenitis NOS (I88.9)
- nonspecific mesenteric lymphadenitis (I88.0)
ICD-10-CM Diagnosis Code R22
Localized swelling, mass and lump of skin and subcutaneous tissue
Includes
- subcutaneous nodules (localized)(superficial)
Type 1 Excludes
- abnormal findings on diagnostic imaging (R90-R93)
- edema (R60.-)
- enlarged lymph nodes (R59.-)
- localized adiposity (E65)
- swelling of joint (M25.4-)
Type 2 Excludes: D75

ICD-10-CM Diagnosis Code D75
Other and unspecified diseases of blood and blood-forming organs
Type 2 Excludes
- acute lymphadenitis (L04.-)
- chronic lymphadenitis (I88.1)
- enlarged lymph nodes (R59.-)
- hypergammaglobulinemia NOS (D89.2)
- lymphadenitis NOS (I88.9)
- mesenteric lymphadenitis (acute) (chronic) (I88.0)

ICD-10-CM Codes Adjacent To R59

R56.00 Simple febrile convulsions

R56.01 Complex febrile convulsions

R56.1 Post traumatic seizures

R56.9 Unspecified convulsions

R57 Shock, not elsewhere classified

R57.0 Cardiogenic shock

R57.1 Hypovolemic shock

R57.8 Other shock

R57.9 Shock, unspecified

R58 Hemorrhage, not elsewhere classified

R59 Enlarged lymph nodes

R59.0 Localized enlarged lymph nodes

R59.1 Generalized enlarged lymph nodes

R59.9 Enlarged lymph nodes, unspecified

R60 Edema, not elsewhere classified

R60.0 Localized edema

R60.1 Generalized edema

R60.9 Edema, unspecified

R61 Generalized hyperhidrosis

R62 Lack of expected normal physiological development in childhood and adults

R62.0 Delayed milestone in childhood

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

2023 ICD-10-CM Diagnosis Code R59

Enlarged lymph nodes

Nonspecific lymphadenitis, unspecified

Chronic lymphadenitis, except mesenteric

Nonspecific mesenteric lymphadenitis

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

Nonspecific lymphadenitis

Other noninfective disorders of lymphatic vessels and lymph nodes

Acute lymphadenitis

Localized swelling, mass and lump of skin and subcutaneous tissue

Other and unspecified diseases of blood and blood-forming organs