ICD-10-CM Codes
N00-N99
N60-N65
N63-
2023 ICD-10-CM Diagnosis Code N63.42

2023 ICD-10-CM Diagnosis Code N63.42

Unspecified lump in left breast, subareolar

2018 - New Code

2019

2020

2021

2022

2023

Billable/Specific Code

N63.42 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 N63.42 became effective on October 1, 2022.
This is the American ICD-10-CM version of N63.42 - other international versions of ICD-10 N63.42 may differ.

The following code(s) above N63.42 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 N63.42:

N00-N99
2023 ICD-10-CM Range N00-N99
Diseases of the genitourinary system
Type 2 Excludes
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Diseases of the genitourinary system
N60-N65
2023 ICD-10-CM Range N60-N65
Disorders of breast
Type 1 Excludes
- disorders of breast associated with childbirth (O91-O92)
Disorders of breast
N63
ICD-10-CM Diagnosis Code N63
Unspecified lump in breast
Applicable To
- Nodule(s) NOS in breast
Unspecified lump in breast

ICD-10-CM N63.42 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

600 Non-malignant breast disorders with cc/mcc
601 Non-malignant breast disorders without cc/mcc

Convert N63.42 to ICD-9-CM

Code History

2018 (effective 10/1/2017): New code
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

Diagnosis Index entries containing back-references to N63.42:

Lump - see also Mass
- breast N63.0
  ICD-10-CM Diagnosis Code N63.0
  Unspecified lump in unspecified breast
  2018 - New Code 2019 - Revised Code 2020 2021 2022 2023 Billable/Specific Code
  - subareolar
    - left N63.42

ICD-10-CM Codes Adjacent To N63.42

N63.21 …… upper outer quadrant

N63.22 …… upper inner quadrant

N63.23 …… lower outer quadrant

N63.24 …… lower inner quadrant

N63.25 …… overlapping quadrants

N63.3 Unspecified lump in axillary tail

N63.31 …… of the right breast

N63.32 …… of the left breast

N63.4 Unspecified lump in breast, subareolar

N63.41 Unspecified lump in right breast, subareolar

N63.42 Unspecified lump in left breast, subareolar

N64 Other disorders of breast

N64.0 Fissure and fistula of nipple

N64.1 Fat necrosis of breast

N64.2 Atrophy of breast

N64.3 Galactorrhea not associated with childbirth

N64.4 Mastodynia

N64.5 Other signs and symptoms in breast

N64.51 Induration of breast

N64.52 Nipple discharge

N64.53 Retraction of nipple

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 N63.42

Unspecified lump in left breast, subareolar

Diseases of the genitourinary system

Disorders of breast

Unspecified lump in breast

Unspecified lump in unspecified breast