All ICD10 Codes
Chapter 13

M00–M99: Diseases of the Musculoskeletal System and Connective Tissue

Diseases of the Musculoskeletal System and Connective Tissue diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)
All CodesBillable Only
Internal Codes
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  • M61.221—

    Paralytic calcification and ossification of muscle, right upper arm

  • M61.222—

    Paralytic calcification and ossification of muscle, left upper arm

  • M61.229—

    Paralytic calcification and ossification of muscle, unspecified upper arm

  • M61.23—

    Paralytic calcification and ossification of muscle, forearm

  • M61.231—

    Paralytic calcification and ossification of muscle, right forearm

  • M61.232—

    Paralytic calcification and ossification of muscle, left forearm

  • M61.239—

    Paralytic calcification and ossification of muscle, unspecified forearm

  • M61.24—

    Paralytic calcification and ossification of muscle, hand

  • M61.241—

    Paralytic calcification and ossification of muscle, right hand

  • M61.242—

    Paralytic calcification and ossification of muscle, left hand

  • M61.249—

    Paralytic calcification and ossification of muscle, unspecified hand

  • M61.25—

    Paralytic calcification and ossification of muscle, thigh

  • M61.251—

    Paralytic calcification and ossification of muscle, right thigh

  • M61.252—

    Paralytic calcification and ossification of muscle, left thigh

  • M61.259—

    Paralytic calcification and ossification of muscle, unspecified thigh

  • M61.26—

    Paralytic calcification and ossification of muscle, lower leg

  • M61.261—

    Paralytic calcification and ossification of muscle, right lower leg

  • M61.262—

    Paralytic calcification and ossification of muscle, left lower leg

  • M61.269—

    Paralytic calcification and ossification of muscle, unspecified lower leg

  • M61.27—

    Paralytic calcification and ossification of muscle, ankle and foot

  • M61.271—

    Paralytic calcification and ossification of muscle, right ankle and foot

  • M61.272—

    Paralytic calcification and ossification of muscle, left ankle and foot

  • M61.279—

    Paralytic calcification and ossification of muscle, unspecified ankle and foot

  • M61.28—

    Paralytic calcification and ossification of muscle, other site

  • M61.29—

    Paralytic calcification and ossification of muscle, multiple sites

  • M61.3—

    Calcification and ossification of muscles associated with burns

  • M61.30—

    Calcification and ossification of muscles associated with burns, unspecified site

  • M61.31—

    Calcification and ossification of muscles associated with burns, shoulder

  • M61.311—

    Calcification and ossification of muscles associated with burns, right shoulder

  • M61.312—

    Calcification and ossification of muscles associated with burns, left shoulder

  • M61.319—

    Calcification and ossification of muscles associated with burns, unspecified shoulder

  • M61.32—

    Calcification and ossification of muscles associated with burns, upper arm

  • M61.321—

    Calcification and ossification of muscles associated with burns, right upper arm

  • M61.322—

    Calcification and ossification of muscles associated with burns, left upper arm

  • M61.329—

    Calcification and ossification of muscles associated with burns, unspecified upper arm

  • M61.33—

    Calcification and ossification of muscles associated with burns, forearm

  • M61.331—

    Calcification and ossification of muscles associated with burns, right forearm

  • M61.332—

    Calcification and ossification of muscles associated with burns, left forearm

  • M61.339—

    Calcification and ossification of muscles associated with burns, unspecified forearm

  • M61.34—

    Calcification and ossification of muscles associated with burns, hand

  • M61.341—

    Calcification and ossification of muscles associated with burns, right hand

  • M61.342—

    Calcification and ossification of muscles associated with burns, left hand

  • M61.349—

    Calcification and ossification of muscles associated with burns, unspecified hand

  • M61.35—

    Calcification and ossification of muscles associated with burns, thigh

  • M61.351—

    Calcification and ossification of muscles associated with burns, right thigh

  • M61.352—

    Calcification and ossification of muscles associated with burns, left thigh

  • M61.359—

    Calcification and ossification of muscles associated with burns, unspecified thigh

  • M61.36—

    Calcification and ossification of muscles associated with burns, lower leg

  • M61.361—

    Calcification and ossification of muscles associated with burns, right lower leg

  • M61.362—

    Calcification and ossification of muscles associated with burns, left lower leg

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