Wiki Coding muscle biopsy 20200 vs 27324

Community Wiki

This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been on AAPC for 30 days and have made 5 posts. Learn More
Code: M62.82

Code Name: ICD-10 Code for Rhabdomyolysis

Block: Rhabdomyolysis

Excludes 1: traumatic rhabdomyolysis (T79.6)


Excludes2: nontraumatic hematoma of muscle (M79.81)


Excludes1: alcoholic myopathy (G72.1)
cramp and spasm (R25.2)
drug-induced myopathy (G72.0)
myalgia (M79.1)
stiff-man syndrome (G25.82)

Excludes2: nontraumatic hematoma of muscle (M79.81)

Details: Disorders of muscles (M60-M63)

Excludes 1: dermatopolymyositis (M33.-)
muscular dystrophies and myopathies (G71-G72)
myopathy in amyloidosis (E85.-)
myopathy in polyarteritis nodosa (M30.0)
myopathy in rheumatoid arthritis (M05.32)
myopathy in scleroderma (M34.-)
myopathy in Sjögren's syndrome (M35.03)
myopathy in systemic lupus erythematosus (M32.-)

Guidelines: Diseases of the musculoskeletal system and connective tissue (M00-M99)

Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Excludes 2: 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)

For more details on M62.82 , ICD-10 Code for Rhabdomyolysis , visit:


Bangor, Maine
Best answers
I code for ASC/outpatient and I have a surgeon who has been advocating for 27324 over 20200 for muscle Bx cases. I have two brief notes to share as examples.

Is there any one who can explain which code is correct and why in these cases?

27324 - Biopsy, soft tissue of thigh or knee area; deep (subfascial or intramuscular)
20200 - Biopsy, muscle; superficial​

Case 1 :

PROCEDURE: Underwent right quadriceps muscle biopsy.
SPECIMENS: Sent to pathology.
ANESTHESIA: MAC anesthesia and local anesthetic.

HISTORY OF PRESENT ILLNESS:The patient was referred to our Neurosurgery Department for muscle biopsy... consent in my presence.

PROCEDURE IN DETAIL: The patient was brought to the operating room on April 18, 2017... the right thigh was prepped and draped using chlorhexidine prep.

A 2-inch incision was made over the right vastus lateralis muscle and following local anesthet ic infiltration, a #15 blade was used to make an incision following adequate anesthetic. Incision was then brought down to the fascia and self-retaining retractor was brought in the field. The fascia was identified and cut The fascia! Following adequate hemostasis and copious irrigation, the fascia was closed with inverted interrupted Vicryl suture and
inverted interrupted Vicryl suture in the deep dermal layer, and subcuticular Monocryl for skin...

Final Pathologic Diagnosis:
1. Skeletal muscle, right quadriceps, biopsy - Mild myopathic changes

Case 2 :

PROCEDURE PERFORMED Left vastus lateralis muscle biopsy
PREOPERATIVE DIAGNOSIS Muscle problems with history of rhabdomyolysis .
POSTOPERATIVE DIAGNOSIS Muscle problems with history of rhabdomyolysis .
ANESTHESIA: 1% lidocaine buffered with bicarbonate and IV sedation .

INDICATIONS: The patient is an 18-year-old male with a history of exercise-induced rhab domyolysis. An extensive workup was carried out. Muscle biopsy was requested in order to assist in the diagnosis...

FINDINGS: At the lime of surgery, the muscle was somewhat pale in appearance The muscle was otherwise grossly normal.

DESCRIPTION OF PROCEDURE: The patient was taken to the operating room , and the left lateral thigh region was shaved, prepped and draped in a sterile fashion . 1% lidocaine buffered with bicarbonate was used to anesthetize the skin and subcutaneous tissues . A 2-inch incision was then made sharply through the skin, down to the deep fascial layer. Points of bleeding in the subcutaneous tissues were cauter ized with bipolar cautery . A self-retaining retractor was then placed . At this point, the deep fascia was incise d. Samples of muscle were then obtained and sent for pathological evaluation. At this point, hemostasis was assured and the wound was irrigated . The wound was then closed with Vicryl sutures in the fascial and subcutaneous layers A running Monocryl suture was used to reapproximate the skin edges Steri-Strip tapes were placed across the incision and a sterile dressing was applied...

Final Pathologic Diagnosis:
1. Skeletal muscle, left quadriceps, biopsy - Mild myopathic changes