ICD-10-CM Codes
M00-M99 Diseases of the musculoskeletal system and connective tissue
M70-M79 Other soft tissue disorders
M79- Other and unspecified soft tissue disorders, not elsewhere classified
2022 ICD-10-CM Diagnosis Code M79.4

2022 ICD-10-CM Diagnosis Code M79.4

Hypertrophy of (infrapatellar) fat pad

2016

2017

2018

2019

2020

2021

2022

Billable/Specific Code

M79.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2022 edition of ICD-10-CM M79.4 became effective on October 1, 2021.
This is the American ICD-10-CM version of M79.4 - other international versions of ICD-10 M79.4 may differ.

The following code(s) above M79.4 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 M79.4:

M00-M99
2022 ICD-10-CM Range M00-M99
Diseases of the musculoskeletal system and connective tissue
Note
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Type 2 Excludes
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- 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 musculoskeletal system and connective tissue
M79
ICD-10-CM Diagnosis Code M79
Other and unspecified soft tissue disorders, not elsewhere classified
Type 1 Excludes
- psychogenic rheumatism (F45.8)
- soft tissue pain, psychogenic (F45.41)
Other and unspecified soft tissue disorders, not elsewhere classified

Approximate Synonyms

Hypertrophy of bilateral infrapatellar fat pads
Hypertrophy of fat pad of knee
Hypertrophy of infrapatellar fat pad
Hypertrophy of left infrapatellar fat pad
Hypertrophy of right infrapatellar fat pad

ICD-10-CM M79.4 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):

606 Minor skin disorders with mcc
607 Minor skin disorders without mcc

Convert M79.4 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

Diagnosis Index entries containing back-references to M79.4:

Degeneration, degenerative
- infrapatellar fat pad M79.4
- popliteal fat pad M79.4
Fat
- localized (pad) E65
  ICD-10-CM Diagnosis Code E65
  Localized adiposity
  2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  Applicable To
  Fat pad
  - knee M79.4
  - retropatellar M79.4
- pad E65
  ICD-10-CM Diagnosis Code E65
  Localized adiposity
  2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  Applicable To
  Fat pad
  - knee M79.4
Fibrosis, fibrotic
- infrapatellar fat pad M79.4
- popliteal fat pad M79.4
Hypertrophy, hypertrophic
- fat pad E65
  ICD-10-CM Diagnosis Code E65
  Localized adiposity
  2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  Applicable To
  Fat pad
  - knee M79.4 (infrapatellar) (popliteal) (prepatellar) (retropatellar)

ICD-10-CM Codes Adjacent To M79.4

M77.9 Enthesopathy, unspecified

M79 Other and unspecified soft tissue disorders, not elsewhere classified

M79.0 Rheumatism, unspecified

M79.1 Myalgia

M79.10 …… unspecified site

M79.11 …… of mastication muscle

M79.12 …… of auxiliary muscles, head and neck

M79.18 …… other site

M79.2 Neuralgia and neuritis, unspecified

M79.3 Panniculitis, unspecified

M79.4 Hypertrophy of (infrapatellar) fat pad

M79.5 Residual foreign body in soft tissue

M79.6 Pain in limb, hand, foot, fingers and toes

M79.60 Pain in limb, unspecified

M79.601 Pain in right arm

M79.602 Pain in left arm

M79.603 Pain in arm, unspecified

M79.604 Pain in right leg

M79.605 Pain in left leg

M79.606 Pain in leg, unspecified

M79.609 Pain in unspecified limb

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

2022 ICD-10-CM Diagnosis Code M79.4

Hypertrophy of (infrapatellar) fat pad

Diseases of the musculoskeletal system and connective tissue

Other and unspecified soft tissue disorders, not elsewhere classified

Localized adiposity

Localized adiposity

Localized adiposity