2027 ICD-10-CM Diagnosis Code M61Calcification and ossification of muscle

ICD-10-CM Codes›M00–M99›M60-M63›M61

ICD-10-CM M61
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M61 is a non-billable ICD-10-CM category code for calcification and ossification of muscle, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M61.00, M61.011, M61.012, and M61.019.

Code Identity

ICD-10-CM Code
M61
Billable Status
No — Non-Billable Category
Code Describes
Calcification and ossification of muscle
Short Description
Calcification and ossification of muscle
Same as the full description in the CMS dataset.
Chapter
M60-M63
Disorders of muscles

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM60-M63Disorders of muscles
CategoryM61Calcification and ossification of muscle
This CodeM61Calcification and ossification of muscle

Specific Coding for Calcification and ossification of muscleOverview

Non-specific codes like M61 require more characters. Use one of these billable codes instead:

  • M61.0 for Myositis ossificans traumatica

  • Use M61.00 for Myositis ossificans traumatica, unspecified site

  • M61.01 for Myositis ossificans traumatica, shoulder

  • M61.02 for Myositis ossificans traumatica, upper arm

  • M61.03 for Myositis ossificans traumatica, forearm

  • M61.04 for Myositis ossificans traumatica, hand

  • M61.05 for Myositis ossificans traumatica, thigh

  • M61.06 for Myositis ossificans traumatica, lower leg

  • M61.07 for Myositis ossificans traumatica, ankle and foot

  • Use M61.08 for Myositis ossificans traumatica, other site

  • Use M61.09 for Myositis ossificans traumatica, multiple sites

  • M61.1 for Myositis ossificans progressiva

  • Use M61.10 for Myositis ossificans progressiva, unspecified site

  • M61.11 for Myositis ossificans progressiva, shoulder

  • M61.12 for Myositis ossificans progressiva, upper arm

  • M61.13 for Myositis ossificans progressiva, forearm

  • M61.14 for Myositis ossificans progressiva, hand and finger(s)

  • M61.15 for Myositis ossificans progressiva, thigh

  • M61.16 for Myositis ossificans progressiva, lower leg

  • M61.17 for Myositis ossificans progressiva, ankle, foot and toe(s)

  • Use M61.18 for Myositis ossificans progressiva, other site

  • Use M61.19 for Myositis ossificans progressiva, multiple sites

  • M61.2 for Paralytic calcification and ossification of muscle

  • Use M61.20 for Paralytic calcification and ossification of muscle, unspecified site

  • M61.21 for Paralytic calcification and ossification of muscle, shoulder

  • M61.22 for Paralytic calcification and ossification of muscle, upper arm

  • M61.23 for Paralytic calcification and ossification of muscle, forearm

  • M61.24 for Paralytic calcification and ossification of muscle, hand

  • M61.25 for Paralytic calcification and ossification of muscle, thigh

  • M61.26 for Paralytic calcification and ossification of muscle, lower leg

  • M61.27 for Paralytic calcification and ossification of muscle, ankle and foot

  • Use M61.28 for Paralytic calcification and ossification of muscle, other site

  • Use M61.29 for Paralytic calcification and ossification of muscle, multiple sites

  • M61.3 for Calcification and ossification of muscles associated with burns

  • Use M61.30 for Calcification and ossification of muscles associated with burns, unspecified site

  • M61.31 for Calcification and ossification of muscles associated with burns, shoulder

  • M61.32 for Calcification and ossification of muscles associated with burns, upper arm

  • M61.33 for Calcification and ossification of muscles associated with burns, forearm

  • M61.34 for Calcification and ossification of muscles associated with burns, hand

  • M61.35 for Calcification and ossification of muscles associated with burns, thigh

  • M61.36 for Calcification and ossification of muscles associated with burns, lower leg

  • M61.37 for Calcification and ossification of muscles associated with burns, ankle and foot

  • Use M61.38 for Calcification and ossification of muscles associated with burns, other site

  • Use M61.39 for Calcification and ossification of muscles associated with burns, multiple sites

  • M61.4 for Other calcification of muscle

  • Use M61.40 for Other calcification of muscle, unspecified site

  • M61.41 for Other calcification of muscle, shoulder

  • M61.42 for Other calcification of muscle, upper arm

  • M61.43 for Other calcification of muscle, forearm

  • M61.44 for Other calcification of muscle, hand

  • M61.45 for Other calcification of muscle, thigh

  • M61.46 for Other calcification of muscle, lower leg

  • M61.47 for Other calcification of muscle, ankle and foot

  • Use M61.48 for Other calcification of muscle, other site

  • Use M61.49 for Other calcification of muscle, multiple sites

  • M61.5 for Other ossification of muscle

  • Use M61.50 for Other ossification of muscle, unspecified site

  • M61.51 for Other ossification of muscle, shoulder

  • M61.52 for Other ossification of muscle, upper arm

  • M61.53 for Other ossification of muscle, forearm

  • M61.54 for Other ossification of muscle, hand

  • M61.55 for Other ossification of muscle, thigh

  • M61.56 for Other ossification of muscle, lower leg

  • M61.57 for Other ossification of muscle, ankle and foot

  • Use M61.58 for Other ossification of muscle, other site

  • Use M61.59 for Other ossification of muscle, multiple sites

  • Use M61.9 for Calcification and ossification of muscle, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M61: its own notes plus those printed at block M60-M63 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block M60-M63 Disorders of muscles applies to 420 codes
  • dermatopolymyositis (M33.-)
  • 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.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block M60-M63 Disorders of muscles applies to 420 codes
  • muscular dystrophies and myopathies (G71-G72)
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M61Overview

What is the ICD-10 code for calcification and ossification of muscle?

M61 is the ICD-10-CM category for calcification and ossification of muscle, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is M61 (Calcification and ossification of muscle) a billable code?

No. This is a category header that groups the codes for calcification and ossification of muscle, and headers cannot be submitted on claims. Claims for calcification and ossification of muscle need a more specific code from this category, such as M61.00, M61.011, and M61.012.

Can M61 be reported with a code from M33?

Not as a rule. The Excludes1 note at block M60-M63, which applies to M61, lists "dermatopolymyositis (M33.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).