ICD-10 · PDGM grouping
M61 Calcification and ossification of muscle
All 154 codes in the M61 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
154
Can lead a claim
102
Cannot lead a claim
52
What CMS assigns to M61
102 of the 154 codes group to Musculoskeletal Rehabilitation; 52 are assigned no clinical group. None of the 154 is assigned a comorbidity subgroup. 102 of the 154 can lead a claim.
Every code in M61
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| M61.0 Myositis ossificans traumatica | ||||
| M61.00 | Myositis ossificans traumatica, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.01 Myositis ossificans traumatica, shoulder | ||||
| M61.011 | Myositis ossificans traumatica, right shoulder | Can lead a claim | E | None |
| M61.012 | Myositis ossificans traumatica, left shoulder | Can lead a claim | E | None |
| M61.019 | Myositis ossificans traumatica, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.02 Myositis ossificans traumatica, upper arm | ||||
| M61.021 | Myositis ossificans traumatica, right upper arm | Can lead a claim | E | None |
| M61.022 | Myositis ossificans traumatica, left upper arm | Can lead a claim | E | None |
| M61.029 | Myositis ossificans traumatica, unspecified upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.03 Myositis ossificans traumatica, forearm | ||||
| M61.031 | Myositis ossificans traumatica, right forearm | Can lead a claim | E | None |
| M61.032 | Myositis ossificans traumatica, left forearm | Can lead a claim | E | None |
| M61.039 | Myositis ossificans traumatica, unspecified forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.04 Myositis ossificans traumatica, hand | ||||
| M61.041 | Myositis ossificans traumatica, right hand | Can lead a claim | E | None |
| M61.042 | Myositis ossificans traumatica, left hand | Can lead a claim | E | None |
| M61.049 | Myositis ossificans traumatica, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.05 Myositis ossificans traumatica, thigh | ||||
| M61.051 | Myositis ossificans traumatica, right thigh | Can lead a claim | E | None |
| M61.052 | Myositis ossificans traumatica, left thigh | Can lead a claim | E | None |
| M61.059 | Myositis ossificans traumatica, unspecified thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.06 Myositis ossificans traumatica, lower leg | ||||
| M61.061 | Myositis ossificans traumatica, right lower leg | Can lead a claim | E | None |
| M61.062 | Myositis ossificans traumatica, left lower leg | Can lead a claim | E | None |
| M61.069 | Myositis ossificans traumatica, unspecified lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.07 Myositis ossificans traumatica, ankle and foot | ||||
| M61.071 | Myositis ossificans traumatica, right ankle and foot | Can lead a claim | E | None |
| M61.072 | Myositis ossificans traumatica, left ankle and foot | Can lead a claim | E | None |
| M61.079 | Myositis ossificans traumatica, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.08 | Myositis ossificans traumatica, other site | Can lead a claim | E | None |
| M61.09 | Myositis ossificans traumatica, multiple sites | Can lead a claim | E | None |
| M61.1 Myositis ossificans progressiva | ||||
| M61.10 | Myositis ossificans progressiva, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.11 Myositis ossificans progressiva, shoulder | ||||
| M61.111 | Myositis ossificans progressiva, right shoulder | Can lead a claim | E | None |
| M61.112 | Myositis ossificans progressiva, left shoulder | Can lead a claim | E | None |
| M61.119 | Myositis ossificans progressiva, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.12 Myositis ossificans progressiva, upper arm | ||||
| M61.121 | Myositis ossificans progressiva, right upper arm | Can lead a claim | E | None |
| M61.122 | Myositis ossificans progressiva, left upper arm | Can lead a claim | E | None |
| M61.129 | Myositis ossificans progressiva, unspecified upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.13 Myositis ossificans progressiva, forearm | ||||
| M61.131 | Myositis ossificans progressiva, right forearm | Can lead a claim | E | None |
| M61.132 | Myositis ossificans progressiva, left forearm | Can lead a claim | E | None |
| M61.139 | Myositis ossificans progressiva, unspecified forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.14 Myositis ossificans progressiva, hand and finger(s) | ||||
| M61.141 | Myositis ossificans progressiva, right hand | Can lead a claim | E | None |
| M61.142 | Myositis ossificans progressiva, left hand | Can lead a claim | E | None |
| M61.143 | Myositis ossificans progressiva, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.144 | Myositis ossificans progressiva, right finger(s) | Can lead a claim | E | None |
| M61.145 | Myositis ossificans progressiva, left finger(s) | Can lead a claim | E | None |
| M61.146 | Myositis ossificans progressiva, unspecified finger(s) | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.15 Myositis ossificans progressiva, thigh | ||||
| M61.151 | Myositis ossificans progressiva, right thigh | Can lead a claim | E | None |
| M61.152 | Myositis ossificans progressiva, left thigh | Can lead a claim | E | None |
| M61.159 | Myositis ossificans progressiva, unspecified thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.16 Myositis ossificans progressiva, lower leg | ||||
| M61.161 | Myositis ossificans progressiva, right lower leg | Can lead a claim | E | None |
| M61.162 | Myositis ossificans progressiva, left lower leg | Can lead a claim | E | None |
| M61.169 | Myositis ossificans progressiva, unspecified lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.17 Myositis ossificans progressiva, ankle, foot and toe(s) | ||||
| M61.171 | Myositis ossificans progressiva, right ankle | Can lead a claim | E | None |
| M61.172 | Myositis ossificans progressiva, left ankle | Can lead a claim | E | None |
| M61.173 | Myositis ossificans progressiva, unspecified ankle | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.174 | Myositis ossificans progressiva, right foot | Can lead a claim | E | None |
| M61.175 | Myositis ossificans progressiva, left foot | Can lead a claim | E | None |
| M61.176 | Myositis ossificans progressiva, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.177 | Myositis ossificans progressiva, right toe(s) | Can lead a claim | E | None |
| M61.178 | Myositis ossificans progressiva, left toe(s) | Can lead a claim | E | None |
| M61.179 | Myositis ossificans progressiva, unspecified toe(s) | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.18 | Myositis ossificans progressiva, other site | Can lead a claim | E | None |
| M61.19 | Myositis ossificans progressiva, multiple sites | Can lead a claim | E | None |
| M61.2 Paralytic calcification and ossification of muscle | ||||
| M61.20 | Paralytic calcification and ossification of muscle, unspecified siteCMS: Paralytic calcifcn and ossification of muscle, unsp site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.21 Paralytic calcification and ossification of muscle, shoulder | ||||
| M61.211 | Paralytic calcification and ossification of muscle, right shoulderCMS: Paralytic calcifcn and ossification of muscle, r shoulder | Can lead a claim | E | None |
| M61.212 | Paralytic calcification and ossification of muscle, left shoulderCMS: Paralytic calcifcn and ossification of muscle, left shoulder | Can lead a claim | E | None |
| M61.219 | Paralytic calcification and ossification of muscle, unspecified shoulderCMS: Paralytic calcifcn and ossification of muscle, unsp shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.22 Paralytic calcification and ossification of muscle, upper arm | ||||
| M61.221 | Paralytic calcification and ossification of muscle, right upper armCMS: Paralytic calcification and ossification of muscle, r up arm | Can lead a claim | E | None |
| M61.222 | Paralytic calcification and ossification of muscle, left upper armCMS: Paralytic calcification and ossification of muscle, l up arm | Can lead a claim | E | None |
| M61.229 | Paralytic calcification and ossification of muscle, unspecified upper armCMS: Paralytic calcifcn and ossifictn of muscle, unsp upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.23 Paralytic calcification and ossification of muscle, forearm | ||||
| M61.231 | Paralytic calcification and ossification of muscle, right forearmCMS: Paralytic calcifcn and ossification of muscle, right forearm | Can lead a claim | E | None |
| M61.232 | Paralytic calcification and ossification of muscle, left forearmCMS: Paralytic calcifcn and ossification of muscle, left forearm | Can lead a claim | E | None |
| M61.239 | Paralytic calcification and ossification of muscle, unspecified forearmCMS: Paralytic calcifcn and ossification of muscle, unsp forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.24 Paralytic calcification and ossification of muscle, hand | ||||
| M61.241 | Paralytic calcification and ossification of muscle, right handCMS: Paralytic calcifcn and ossification of muscle, right hand | Can lead a claim | E | None |
| M61.242 | Paralytic calcification and ossification of muscle, left handCMS: Paralytic calcifcn and ossification of muscle, left hand | Can lead a claim | E | None |
| M61.249 | Paralytic calcification and ossification of muscle, unspecified handCMS: Paralytic calcifcn and ossification of muscle, unsp hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.25 Paralytic calcification and ossification of muscle, thigh | ||||
| M61.251 | Paralytic calcification and ossification of muscle, right thighCMS: Paralytic calcifcn and ossification of muscle, right thigh | Can lead a claim | E | None |
| M61.252 | Paralytic calcification and ossification of muscle, left thighCMS: Paralytic calcifcn and ossification of muscle, left thigh | Can lead a claim | E | None |
| M61.259 | Paralytic calcification and ossification of muscle, unspecified thighCMS: Paralytic calcifcn and ossification of muscle, unsp thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.26 Paralytic calcification and ossification of muscle, lower leg | ||||
| M61.261 | Paralytic calcification and ossification of muscle, right lower legCMS: Paralytic calcifcn and ossification of muscle, r low leg | Can lead a claim | E | None |
| M61.262 | Paralytic calcification and ossification of muscle, left lower legCMS: Paralytic calcifcn and ossification of muscle, l low leg | Can lead a claim | E | None |
| M61.269 | Paralytic calcification and ossification of muscle, unspecified lower legCMS: Paralytic calcifcn and ossifictn of muscle, unsp lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.27 Paralytic calcification and ossification of muscle, ankle and foot | ||||
| M61.271 | Paralytic calcification and ossification of muscle, right ankle and footCMS: Paralytic calcifcn and ossification of muscle, right ank/ft | Can lead a claim | E | None |
| M61.272 | Paralytic calcification and ossification of muscle, left ankle and footCMS: Paralytic calcifcn and ossification of muscle, left ank/ft | Can lead a claim | E | None |
| M61.279 | Paralytic calcification and ossification of muscle, unspecified ankle and footCMS: Paralytic calcifcn and ossification of muscle, unsp ank/ft | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.28 | Paralytic calcification and ossification of muscle, other siteCMS: Paralytic calcification and ossification of muscle, oth site | Can lead a claim | E | None |
| M61.29 | Paralytic calcification and ossification of muscle, multiple sitesCMS: Paralytic calcifcn and ossifictn of muscle, multiple sites | Can lead a claim | E | None |
| M61.3 Calcification and ossification of muscles associated with burns | ||||
| M61.30 | Calcification and ossification of muscles associated with burns, unspecified siteCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.31 Calcification and ossification of muscles associated with burns, shoulder | ||||
| M61.311 | Calcification and ossification of muscles associated with burns, right shoulderCMS: Calcifcn and ossifictn of muscles assoc w burns, r shoulder | Can lead a claim | E | None |
| M61.312 | Calcification and ossification of muscles associated with burns, left shoulderCMS: Calcifcn and ossifictn of muscles assoc w burns, l shoulder | Can lead a claim | E | None |
| M61.319 | Calcification and ossification of muscles associated with burns, unspecified shoulderCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp shldr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.32 Calcification and ossification of muscles associated with burns, upper arm | ||||
| M61.321 | Calcification and ossification of muscles associated with burns, right upper armCMS: Calcifcn and ossifictn of muscles assoc w burns, r up arm | Can lead a claim | E | None |
| M61.322 | Calcification and ossification of muscles associated with burns, left upper armCMS: Calcifcn and ossifictn of muscles assoc w burns, l up arm | Can lead a claim | E | None |
| M61.329 | Calcification and ossification of muscles associated with burns, unspecified upper armCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp up arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.33 Calcification and ossification of muscles associated with burns, forearm | ||||
| M61.331 | Calcification and ossification of muscles associated with burns, right forearmCMS: Calcifcn and ossifictn of muscles assoc w burns, r forearm | Can lead a claim | E | None |
| M61.332 | Calcification and ossification of muscles associated with burns, left forearmCMS: Calcifcn and ossifictn of muscles assoc w burns, l forearm | Can lead a claim | E | None |
| M61.339 | Calcification and ossification of muscles associated with burns, unspecified forearmCMS: Calcifcn and ossifictn of musc assoc w burns, unsp forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.34 Calcification and ossification of muscles associated with burns, hand | ||||
| M61.341 | Calcification and ossification of muscles associated with burns, right handCMS: Calcifcn and ossifictn of muscles assoc w burns, right hand | Can lead a claim | E | None |
| M61.342 | Calcification and ossification of muscles associated with burns, left handCMS: Calcifcn and ossifictn of muscles assoc w burns, left hand | Can lead a claim | E | None |
| M61.349 | Calcification and ossification of muscles associated with burns, unspecified handCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.35 Calcification and ossification of muscles associated with burns, thigh | ||||
| M61.351 | Calcification and ossification of muscles associated with burns, right thighCMS: Calcifcn and ossifictn of muscles assoc w burns, right thigh | Can lead a claim | E | None |
| M61.352 | Calcification and ossification of muscles associated with burns, left thighCMS: Calcifcn and ossifictn of muscles assoc w burns, left thigh | Can lead a claim | E | None |
| M61.359 | Calcification and ossification of muscles associated with burns, unspecified thighCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.36 Calcification and ossification of muscles associated with burns, lower leg | ||||
| M61.361 | Calcification and ossification of muscles associated with burns, right lower legCMS: Calcifcn and ossifictn of muscles assoc w burns, r low leg | Can lead a claim | E | None |
| M61.362 | Calcification and ossification of muscles associated with burns, left lower legCMS: Calcifcn and ossifictn of muscles assoc w burns, l low leg | Can lead a claim | E | None |
| M61.369 | Calcification and ossification of muscles associated with burns, unspecified lower legCMS: Calcifcn and ossifictn of musc assoc w burns, unsp low leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.37 Calcification and ossification of muscles associated with burns, ankle and foot | ||||
| M61.371 | Calcification and ossification of muscles associated with burns, right ankle and footCMS: Calcifcn and ossifictn of musc assoc w burns, right ank/ft | Can lead a claim | E | None |
| M61.372 | Calcification and ossification of muscles associated with burns, left ankle and footCMS: Calcifcn and ossifictn of muscles assoc w burns, left ank/ft | Can lead a claim | E | None |
| M61.379 | Calcification and ossification of muscles associated with burns, unspecified ankle and footCMS: Calcifcn and ossifictn of muscles assoc w burns, unsp ank/ft | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.38 | Calcification and ossification of muscles associated with burns, other siteCMS: Calcifcn and ossifictn of muscles assoc w burns, oth site | Can lead a claim | E | None |
| M61.39 | Calcification and ossification of muscles associated with burns, multiple sitesCMS: Calcifcn and ossifictn of muscles assoc w burns, mult sites | Can lead a claim | E | None |
| M61.4 Other calcification of muscle | ||||
| M61.40 | Other calcification of muscle, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.41 Other calcification of muscle, shoulder | ||||
| M61.411 | Other calcification of muscle, right shoulder | Can lead a claim | E | None |
| M61.412 | Other calcification of muscle, left shoulder | Can lead a claim | E | None |
| M61.419 | Other calcification of muscle, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.42 Other calcification of muscle, upper arm | ||||
| M61.421 | Other calcification of muscle, right upper arm | Can lead a claim | E | None |
| M61.422 | Other calcification of muscle, left upper arm | Can lead a claim | E | None |
| M61.429 | Other calcification of muscle, unspecified upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.43 Other calcification of muscle, forearm | ||||
| M61.431 | Other calcification of muscle, right forearm | Can lead a claim | E | None |
| M61.432 | Other calcification of muscle, left forearm | Can lead a claim | E | None |
| M61.439 | Other calcification of muscle, unspecified forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.44 Other calcification of muscle, hand | ||||
| M61.441 | Other calcification of muscle, right hand | Can lead a claim | E | None |
| M61.442 | Other calcification of muscle, left hand | Can lead a claim | E | None |
| M61.449 | Other calcification of muscle, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.45 Other calcification of muscle, thigh | ||||
| M61.451 | Other calcification of muscle, right thigh | Can lead a claim | E | None |
| M61.452 | Other calcification of muscle, left thigh | Can lead a claim | E | None |
| M61.459 | Other calcification of muscle, unspecified thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.46 Other calcification of muscle, lower leg | ||||
| M61.461 | Other calcification of muscle, right lower leg | Can lead a claim | E | None |
| M61.462 | Other calcification of muscle, left lower leg | Can lead a claim | E | None |
| M61.469 | Other calcification of muscle, unspecified lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.47 Other calcification of muscle, ankle and foot | ||||
| M61.471 | Other calcification of muscle, right ankle and foot | Can lead a claim | E | None |
| M61.472 | Other calcification of muscle, left ankle and foot | Can lead a claim | E | None |
| M61.479 | Other calcification of muscle, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.48 | Other calcification of muscle, other site | Can lead a claim | E | None |
| M61.49 | Other calcification of muscle, multiple sites | Can lead a claim | E | None |
| M61.5 Other ossification of muscle | ||||
| M61.50 | Other ossification of muscle, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.51 Other ossification of muscle, shoulder | ||||
| M61.511 | Other ossification of muscle, right shoulder | Can lead a claim | E | None |
| M61.512 | Other ossification of muscle, left shoulder | Can lead a claim | E | None |
| M61.519 | Other ossification of muscle, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.52 Other ossification of muscle, upper arm | ||||
| M61.521 | Other ossification of muscle, right upper arm | Can lead a claim | E | None |
| M61.522 | Other ossification of muscle, left upper arm | Can lead a claim | E | None |
| M61.529 | Other ossification of muscle, unspecified upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.53 Other ossification of muscle, forearm | ||||
| M61.531 | Other ossification of muscle, right forearm | Can lead a claim | E | None |
| M61.532 | Other ossification of muscle, left forearm | Can lead a claim | E | None |
| M61.539 | Other ossification of muscle, unspecified forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.54 Other ossification of muscle, hand | ||||
| M61.541 | Other ossification of muscle, right hand | Can lead a claim | E | None |
| M61.542 | Other ossification of muscle, left hand | Can lead a claim | E | None |
| M61.549 | Other ossification of muscle, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.55 Other ossification of muscle, thigh | ||||
| M61.551 | Other ossification of muscle, right thigh | Can lead a claim | E | None |
| M61.552 | Other ossification of muscle, left thigh | Can lead a claim | E | None |
| M61.559 | Other ossification of muscle, unspecified thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.56 Other ossification of muscle, lower leg | ||||
| M61.561 | Other ossification of muscle, right lower leg | Can lead a claim | E | None |
| M61.562 | Other ossification of muscle, left lower leg | Can lead a claim | E | None |
| M61.569 | Other ossification of muscle, unspecified lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.57 Other ossification of muscle, ankle and foot | ||||
| M61.571 | Other ossification of muscle, right ankle and foot | Can lead a claim | E | None |
| M61.572 | Other ossification of muscle, left ankle and foot | Can lead a claim | E | None |
| M61.579 | Other ossification of muscle, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M61.58 | Other ossification of muscle, other site | Can lead a claim | E | None |
| M61.59 | Other ossification of muscle, multiple sites | Can lead a claim | E | None |
| M61.9 | Calcification and ossification of muscle, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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