ICD-10 · PDGM grouping
M26-M27 — Dentofacial anomalies [including malocclusion] and other disorders of jaw
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
94
No clinical group
87
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
6 of the 94 codes in M26-M27 group to Musculoskeletal Rehabilitation, but the range is not uniform — it spreads across 2 clinical groups. A further 87 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in M26-M27
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| M2600 | Unspecified anomaly of jaw size | None | Cannot group |
| M2601 | Maxillary hyperplasia | None | Cannot group |
| M2602 | Maxillary hypoplasia | None | Cannot group |
| M2603 | Mandibular hyperplasia | None | Cannot group |
| M2604 | Mandibular hypoplasia | None | Cannot group |
| M2605 | Macrogenia | None | Cannot group |
| M2606 | Microgenia | None | Cannot group |
| M2607 | Excessive tuberosity of jaw | None | Cannot group |
| M2609 | Other specified anomalies of jaw size | None | Cannot group |
| M2610 | Unspecified anomaly of jaw-cranial base relationship | None | Cannot group |
| M2611 | Maxillary asymmetry | None | Cannot group |
| M2612 | Other jaw asymmetry | None | Cannot group |
| M2619 | Other specified anomalies of jaw-cranial base relationship | None | Cannot group |
| M2620 | Unspecified anomaly of dental arch relationship | None | Cannot group |
| M26211 | Malocclusion, Angle's class I | None | Cannot group |
| M26212 | Malocclusion, Angle's class II | None | Cannot group |
| M26213 | Malocclusion, Angle's class III | None | Cannot group |
| M26219 | Malocclusion, Angle's class, unspecified | None | Cannot group |
| M26220 | Open anterior occlusal relationship | None | Cannot group |
| M26221 | Open posterior occlusal relationship | None | Cannot group |
| M2623 | Excessive horizontal overlap | None | Cannot group |
| M2624 | Reverse articulation | None | Cannot group |
| M2625 | Anomalies of interarch distance | None | Cannot group |
| M2629 | Other anomalies of dental arch relationship | None | Cannot group |
| M2630 | Unsp anomaly of tooth position of fully erupted tooth/teeth | None | Cannot group |
| M2631 | Crowding of fully erupted teeth | None | Cannot group |
| M2632 | Excessive spacing of fully erupted teeth | None | Cannot group |
| M2633 | Horizontal displacement of fully erupted tooth or teeth | None | Cannot group |
| M2634 | Vertical displacement of fully erupted tooth or teeth | None | Cannot group |
| M2635 | Rotation of fully erupted tooth or teeth | None | Cannot group |
| M2636 | Insufficient interocclusal distance of fully erupted teeth | None | Cannot group |
| M2637 | Excessive interocclusal distance of fully erupted teeth | None | Cannot group |
| M2639 | Oth anomalies of tooth position of fully erupted tooth/teeth | None | Cannot group |
| M264 | Malocclusion, unspecified | None | Cannot group |
| M2650 | Dentofacial functional abnormalities, unspecified | None | Cannot group |
| M2651 | Abnormal jaw closure | None | Cannot group |
| M2652 | Limited mandibular range of motion | None | Cannot group |
| M2653 | Deviation in opening and closing of the mandible | None | Cannot group |
| M2654 | Insufficient anterior guidance | None | Cannot group |
| M2655 | Centric occlusion maximum intercuspation discrepancy | None | Cannot group |
| M2656 | Non-working side interference | None | Cannot group |
| M2657 | Lack of posterior occlusal support | None | Cannot group |
| M2659 | Other dentofacial functional abnormalities | None | Cannot group |
| M26601 | Right temporomandibular joint disorder, unspecified | None | Cannot group |
| M26602 | Left temporomandibular joint disorder, unspecified | None | Cannot group |
| M26603 | Bilateral temporomandibular joint disorder, unspecified | None | Cannot group |
| M26609 | Unspecified TMJ joint disorder, unspecified side | None | Cannot group |
| M26611 | Adhesions and ankylosis of right temporomandibular joint | None | Cannot group |
| M26612 | Adhesions and ankylosis of left temporomandibular joint | None | Cannot group |
| M26613 | Adhesions and ankylosis of bilateral temporomandibular joint | None | Cannot group |
| M26619 | Adhesions and ankylosis of TMJ joint, unspecified side | None | Cannot group |
| M26621 | Arthralgia of right temporomandibular joint | None | Cannot group |
| M26622 | Arthralgia of left temporomandibular joint | None | Cannot group |
| M26623 | Arthralgia of bilateral temporomandibular joint | None | Cannot group |
| M26629 | Arthralgia of temporomandibular joint, unspecified side | None | Cannot group |
| M26631 | Articular disc disorder of right temporomandibular joint | None | Cannot group |
| M26632 | Articular disc disorder of left temporomandibular joint | None | Cannot group |
| M26633 | Articular disc disorder of bilateral temporomandibular joint | None | Cannot group |
| M26639 | Articular disc disorder of TMJ joint, unspecified side | None | Cannot group |
| M26641 | Arthritis of right temporomandibular joint | E | Accepted |
| M26642 | Arthritis of left temporomandibular joint | E | Accepted |
| M26643 | Arthritis of bilateral temporomandibular joint | E | Accepted |
| M26649 | Arthritis of unspecified temporomandibular joint | None | Cannot group |
| M26651 | Arthropathy of right temporomandibular joint | E | Accepted |
| M26652 | Arthropathy of left temporomandibular joint | E | Accepted |
| M26653 | Arthropathy of bilateral temporomandibular joint | E | Accepted |
| M26659 | Arthropathy of unspecified temporomandibular joint | None | Cannot group |
| M2669 | Other specified disorders of temporomandibular joint | None | Cannot group |
| M2670 | Unspecified alveolar anomaly | None | Cannot group |
| M2671 | Alveolar maxillary hyperplasia | None | Cannot group |
| M2672 | Alveolar mandibular hyperplasia | None | Cannot group |
| M2673 | Alveolar maxillary hypoplasia | None | Cannot group |
| M2674 | Alveolar mandibular hypoplasia | None | Cannot group |
| M2679 | Other specified alveolar anomalies | None | Cannot group |
| M2681 | Anterior soft tissue impingement | None | Cannot group |
| M2682 | Posterior soft tissue impingement | None | Cannot group |
| M2689 | Other dentofacial anomalies | None | Cannot group |
| M269 | Dentofacial anomaly, unspecified | None | Cannot group |
| M270 | Developmental disorders of jaws | None | Cannot group |
| M271 | Giant cell granuloma, central | None | Cannot group |
| M272 | Inflammatory conditions of jaws | A | Accepted |
| M273 | Alveolitis of jaws | None | Cannot group |
| M2740 | Unspecified cyst of jaw | None | Cannot group |
| M2749 | Other cysts of jaw | None | Cannot group |
| M2751 | Perforation of root canal space due to endodontic treatment | None | Cannot group |
| M2752 | Endodontic overfill | None | Cannot group |
| M2753 | Endodontic underfill | None | Cannot group |
| M2759 | Oth periradicular pathology assoc w prev endodontic trtmt | None | Cannot group |
| M2761 | Osseointegration failure of dental implant | None | Cannot group |
| M2762 | Post-osseointegration biological failure of dental implant | None | Cannot group |
| M2763 | Post-osseointegration mechanical failure of dental implant | None | Cannot group |
| M2769 | Other endosseous dental implant failure | None | Cannot group |
| M278 | Other specified diseases of jaws | None | Cannot group |
| M279 | Disease of jaws, unspecified | None | Cannot group |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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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