ICD-10-CM Codes
M00-M99 Diseases of the musculoskeletal system and connective tissue
M70-M79 Other soft tissue disorders
M70- Soft tissue disorders related to use, overuse and pressure
2021 ICD-10-CM Diagnosis Code M70.42

2021 ICD-10-CM Diagnosis Code M70.42

Prepatellar bursitis, left knee

2016

2017

2018

2019

2020

2021

Billable/Specific Code

M70.42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM M70.42 became effective on October 1, 2020.
This is the American ICD-10-CM version of M70.42 - other international versions of ICD-10 M70.42 may differ.

The following code(s) above M70.42 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 M70.42:

M00-M99
2021 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
M70
ICD-10-CM Diagnosis Code M70
Soft tissue disorders related to use, overuse and pressure
Includes
- soft tissue disorders of occupational origin
Type 1 Excludes
- bursitis NOS (M71.9-)
Type 2 Excludes
- bursitis of shoulder (M75.5)
- enthesopathies (M76-M77)
- pressure ulcer (pressure area) (L89.-)
Use Additional
- external cause code to identify activity causing disorder (Y93.-)
Soft tissue disorders related to use, overuse and pressure

Approximate Synonyms

Bursitis of bilateral prepatellar bursa
Left prepatellar (kneecap) bursitis
Left prepatellar bursitis
Prepatellar bursitis of bilateral knees
Prepatellar bursitis of left knee

ICD-10-CM M70.42 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

557 Tendonitis, myositis and bursitis with mcc
558 Tendonitis, myositis and bursitis without mcc

Convert M70.42 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

ICD-10-CM Codes Adjacent To M70.42

M70.20 …… unspecified elbow

M70.21 …… right elbow

M70.22 …… left elbow

M70.3 Other bursitis of elbow

M70.30 …… unspecified elbow

M70.31 …… right elbow

M70.32 …… left elbow

M70.4 Prepatellar bursitis

M70.40 …… unspecified knee

M70.41 …… right knee

M70.42 …… left knee

M70.5 Other bursitis of knee

M70.50 …… unspecified knee

M70.51 …… right knee

M70.52 …… left knee

M70.6 Trochanteric bursitis

M70.60 …… unspecified hip

M70.61 …… right hip

M70.62 …… left hip

M70.7 Other bursitis of hip

M70.70 …… unspecified hip

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

2021 ICD-10-CM Diagnosis Code M70.42

Prepatellar bursitis, left knee

Diseases of the musculoskeletal system and connective tissue

Soft tissue disorders related to use, overuse and pressure