M45-M49 — Spondylopathies
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.
Codes in range
264
No clinical group
38
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
226 of the 264 codes in M45-M49 group to Musculoskeletal Rehabilitation. A further 38 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in M45-M49
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| M450 | Ankylosing spondylitis of multiple sites in spine | E | Accepted |
| M451 | Ankylosing spondylitis of occipito-atlanto-axial region | E | Accepted |
| M452 | Ankylosing spondylitis of cervical region | E | Accepted |
| M453 | Ankylosing spondylitis of cervicothoracic region | E | Accepted |
| M454 | Ankylosing spondylitis of thoracic region | E | Accepted |
| M455 | Ankylosing spondylitis of thoracolumbar region | E | Accepted |
| M456 | Ankylosing spondylitis lumbar region | E | Accepted |
| M457 | Ankylosing spondylitis of lumbosacral region | E | Accepted |
| M458 | Ankylosing spondylitis sacral and sacrococcygeal region | E | Accepted |
| M459 | Ankylosing spondylitis of unspecified sites in spine | None | Cannot group |
| M45A0 | Non-radiographic axial spondyloarthritis unsp site in spin | None | Cannot group |
| M45A1 | Non-radiographic axial spondyloarthritis occipt-atlan-ax rgn | E | Accepted |
| M45A2 | Non-radiographic axial spondyloarthritis of cervical region | E | Accepted |
| M45A3 | Non-radiographic axial spondyloarthritis of cervicothor rgn | E | Accepted |
| M45A4 | Non-radiographic axial spondyloarthritis of thoracic region | E | Accepted |
| M45A5 | Non-radiographic axial spondyloarthritis of thrclm region | E | Accepted |
| M45A6 | Non-radiographic axial spondyloarthritis of lumbar region | E | Accepted |
| M45A7 | Non-radiographic axial spondyloarthritis of lumbosacr region | E | Accepted |
| M45A8 | Non-radiographic axial spondyloarthritis sacr/sacrocygl rgn | E | Accepted |
| M45AB | Non-radiographic axial spondyloarthritis mult site in spine | E | Accepted |
| M4600 | Spinal enthesopathy, site unspecified | None | Cannot group |
| M4601 | Spinal enthesopathy, occipito-atlanto-axial region | E | Accepted |
| M4602 | Spinal enthesopathy, cervical region | E | Accepted |
| M4603 | Spinal enthesopathy, cervicothoracic region | E | Accepted |
| M4604 | Spinal enthesopathy, thoracic region | E | Accepted |
| M4605 | Spinal enthesopathy, thoracolumbar region | E | Accepted |
| M4606 | Spinal enthesopathy, lumbar region | E | Accepted |
| M4607 | Spinal enthesopathy, lumbosacral region | E | Accepted |
| M4608 | Spinal enthesopathy, sacral and sacrococcygeal region | E | Accepted |
| M4609 | Spinal enthesopathy, multiple sites in spine | E | Accepted |
| M461 | Sacroiliitis, not elsewhere classified | E | Accepted |
| M4620 | Osteomyelitis of vertebra, site unspecified | None | Too unspecified |
| M4621 | Osteomyelitis of vertebra, occipito-atlanto-axial region | E | Accepted |
| M4622 | Osteomyelitis of vertebra, cervical region | E | Accepted |
| M4623 | Osteomyelitis of vertebra, cervicothoracic region | E | Accepted |
| M4624 | Osteomyelitis of vertebra, thoracic region | E | Accepted |
| M4625 | Osteomyelitis of vertebra, thoracolumbar region | E | Accepted |
| M4626 | Osteomyelitis of vertebra, lumbar region | E | Accepted |
| M4627 | Osteomyelitis of vertebra, lumbosacral region | E | Accepted |
| M4628 | Osteomyelitis of vertebra, sacral and sacrococcygeal region | E | Accepted |
| M4630 | Infection of intervertebral disc (pyogenic), site unsp | None | Too unspecified |
| M4631 | Infection of intvrt disc (pyogenic), occipt-atlan-ax region | E | Accepted |
| M4632 | Infection of intervertebral disc (pyogenic), cervical region | E | Accepted |
| M4633 | Infection of intvrt disc (pyogenic), cervicothor region | E | Accepted |
| M4634 | Infection of intervertebral disc (pyogenic), thoracic region | E | Accepted |
| M4635 | Infection of intvrt disc (pyogenic), thoracolumbar region | E | Accepted |
| M4636 | Infection of intervertebral disc (pyogenic), lumbar region | E | Accepted |
| M4637 | Infection of intvrt disc (pyogenic), lumbosacral region | E | Accepted |
| M4638 | Infection of intvrt disc (pyogenic), sacr/sacrocygl region | E | Accepted |
| M4639 | Infection of intvrt disc (pyogenic), multiple sites in spine | E | Accepted |
| M4640 | Discitis, unspecified, site unspecified | None | Cannot group |
| M4641 | Discitis, unspecified, occipito-atlanto-axial region | E | Accepted |
| M4642 | Discitis, unspecified, cervical region | E | Accepted |
| M4643 | Discitis, unspecified, cervicothoracic region | E | Accepted |
| M4644 | Discitis, unspecified, thoracic region | E | Accepted |
| M4645 | Discitis, unspecified, thoracolumbar region | E | Accepted |
| M4646 | Discitis, unspecified, lumbar region | E | Accepted |
| M4647 | Discitis, unspecified, lumbosacral region | E | Accepted |
| M4648 | Discitis, unspecified, sacral and sacrococcygeal region | E | Accepted |
| M4649 | Discitis, unspecified, multiple sites in spine | E | Accepted |
| M4650 | Other infective spondylopathies, site unspecified | None | Cannot group |
| M4651 | Oth infective spondylopathies, occipito-atlanto-axial region | E | Accepted |
| M4652 | Other infective spondylopathies, cervical region | E | Accepted |
| M4653 | Other infective spondylopathies, cervicothoracic region | E | Accepted |
| M4654 | Other infective spondylopathies, thoracic region | E | Accepted |
| M4655 | Other infective spondylopathies, thoracolumbar region | E | Accepted |
| M4656 | Other infective spondylopathies, lumbar region | E | Accepted |
| M4657 | Other infective spondylopathies, lumbosacral region | E | Accepted |
| M4658 | Oth infective spondylopathies, sacr/sacrocygl region | E | Accepted |
| M4659 | Other infective spondylopathies, multiple sites in spine | E | Accepted |
| M4680 | Oth inflammatory spondylopathies, site unspecified | None | Cannot group |
| M4681 | Oth inflammatory spondylopathies, occipt-atlan-ax region | E | Accepted |
| M4682 | Oth inflammatory spondylopathies, cervical region | E | Accepted |
| M4683 | Oth inflammatory spondylopathies, cervicothoracic region | E | Accepted |
| M4684 | Oth inflammatory spondylopathies, thoracic region | E | Accepted |
| M4685 | Oth inflammatory spondylopathies, thoracolumbar region | E | Accepted |
| M4686 | Other specified inflammatory spondylopathies, lumbar region | E | Accepted |
| M4687 | Oth inflammatory spondylopathies, lumbosacral region | E | Accepted |
| M4688 | Oth inflammatory spondylopathies, sacr/sacrocygl region | E | Accepted |
| M4689 | Oth inflammatory spondylopathies, multiple sites in spine | E | Accepted |
| M4690 | Unspecified inflammatory spondylopathy, site unspecified | None | Cannot group |
| M4691 | Unsp inflammatory spondylopathy, occipt-atlan-ax region | E | Accepted |
| M4692 | Unspecified inflammatory spondylopathy, cervical region | E | Accepted |
| M4693 | Unsp inflammatory spondylopathy, cervicothoracic region | E | Accepted |
| M4694 | Unspecified inflammatory spondylopathy, thoracic region | E | Accepted |
| M4695 | Unspecified inflammatory spondylopathy, thoracolumbar region | E | Accepted |
| M4696 | Unspecified inflammatory spondylopathy, lumbar region | E | Accepted |
| M4697 | Unspecified inflammatory spondylopathy, lumbosacral region | E | Accepted |
| M4698 | Unsp inflammatory spondylopathy, sacr/sacrocygl region | E | Accepted |
| M4699 | Unsp inflammatory spondylopathy, multiple sites in spine | E | Accepted |
| M47011 | Anterior spinal artery comprsn synd, occipt-atlan-ax region | E | Accepted |
| M47012 | Anterior spinal artery comprsn syndromes, cervical region | E | Accepted |
| M47013 | Anterior spinal artery comprsn syndromes, cervicothor region | E | Accepted |
| M47014 | Anterior spinal artery comprsn syndromes, thoracic region | E | Accepted |
| M47015 | Anterior spinal artery comprsn syndromes, thoracolum region | E | Accepted |
| M47016 | Anterior spinal artery compression syndromes, lumbar region | E | Accepted |
| M47019 | Anterior spinal artery compression syndromes, site unsp | None | Too unspecified |
| M47021 | Verteb art compression syndromes, occipt-atlan-ax region | E | Accepted |
| M47022 | Vertebral artery compression syndromes, cervical region | E | Accepted |
| M47029 | Vertebral artery compression syndromes, site unspecified | None | Too unspecified |
| M4710 | Other spondylosis with myelopathy, site unspecified | None | Too unspecified |
| M4711 | Oth spondylosis w myelopathy, occipito-atlanto-axial region | E | Accepted |
| M4712 | Other spondylosis with myelopathy, cervical region | E | Accepted |
| M4713 | Other spondylosis with myelopathy, cervicothoracic region | E | Accepted |
| M4714 | Other spondylosis with myelopathy, thoracic region | E | Accepted |
| M4715 | Other spondylosis with myelopathy, thoracolumbar region | E | Accepted |
| M4716 | Other spondylosis with myelopathy, lumbar region | E | Accepted |
| M4720 | Other spondylosis with radiculopathy, site unspecified | None | Cannot group |
| M4721 | Oth spondylosis w radiculopathy, occipt-atlan-ax region | E | Accepted |
| M4722 | Other spondylosis with radiculopathy, cervical region | E | Accepted |
| M4723 | Other spondylosis with radiculopathy, cervicothoracic region | E | Accepted |
| M4724 | Other spondylosis with radiculopathy, thoracic region | E | Accepted |
| M4725 | Other spondylosis with radiculopathy, thoracolumbar region | E | Accepted |
| M4726 | Other spondylosis with radiculopathy, lumbar region | E | Accepted |
| M4727 | Other spondylosis with radiculopathy, lumbosacral region | E | Accepted |
| M4728 | Oth spondylosis w radiculopathy, sacr/sacrocygl region | E | Accepted |
| M47811 | Spondyls w/o myelpath or radiculopathy, occipt-atlan-ax rgn | E | Accepted |
| M47812 | Spondylosis w/o myelopathy or radiculopathy, cervical region | E | Accepted |
| M47813 | Spondyls w/o myelopathy or radiculopathy, cervicothor region | E | Accepted |
| M47814 | Spondylosis w/o myelopathy or radiculopathy, thoracic region | E | Accepted |
| M47815 | Spondyls w/o myelopathy or radiculopathy, thoracolum region | E | Accepted |
| M47816 | Spondylosis w/o myelopathy or radiculopathy, lumbar region | E | Accepted |
| M47817 | Spondyls w/o myelopathy or radiculopathy, lumbosacr region | E | Accepted |
| M47818 | Spondyls w/o myelpath or radiculopathy, sacr/sacrocygl rgn | E | Accepted |
| M47819 | Spondylosis without myelopathy or radiculopathy, site unsp | None | Cannot group |
| M47891 | Other spondylosis, occipito-atlanto-axial region | E | Accepted |
| M47892 | Other spondylosis, cervical region | E | Accepted |
| M47893 | Other spondylosis, cervicothoracic region | E | Accepted |
| M47894 | Other spondylosis, thoracic region | E | Accepted |
| M47895 | Other spondylosis, thoracolumbar region | E | Accepted |
| M47896 | Other spondylosis, lumbar region | E | Accepted |
| M47897 | Other spondylosis, lumbosacral region | E | Accepted |
| M47898 | Other spondylosis, sacral and sacrococcygeal region | E | Accepted |
| M47899 | Other spondylosis, site unspecified | None | Cannot group |
| M479 | Spondylosis, unspecified | None | Cannot group |
| M4800 | Spinal stenosis, site unspecified | None | Cannot group |
| M4801 | Spinal stenosis, occipito-atlanto-axial region | E | Accepted |
| M4802 | Spinal stenosis, cervical region | E | Accepted |
| M4803 | Spinal stenosis, cervicothoracic region | E | Accepted |
| M4804 | Spinal stenosis, thoracic region | E | Accepted |
| M4805 | Spinal stenosis, thoracolumbar region | E | Accepted |
| M48061 | Spinal stenosis, lumbar region without neurogenic claud | E | Accepted |
| M48062 | Spinal stenosis, lumbar region with neurogenic claudication | E | Accepted |
| M4807 | Spinal stenosis, lumbosacral region | E | Accepted |
| M4808 | Spinal stenosis, sacral and sacrococcygeal region | E | Accepted |
| M4810 | Ankylosing hyperostosis [Forestier], site unspecified | E | Accepted |
| M4811 | Ankylosing hyperostosis, occipito-atlanto-axial region | E | Accepted |
| M4812 | Ankylosing hyperostosis [Forestier], cervical region | E | Accepted |
| M4813 | Ankylosing hyperostosis [Forestier], cervicothoracic region | E | Accepted |
| M4814 | Ankylosing hyperostosis [Forestier], thoracic region | E | Accepted |
| M4815 | Ankylosing hyperostosis [Forestier], thoracolumbar region | E | Accepted |
| M4816 | Ankylosing hyperostosis [Forestier], lumbar region | E | Accepted |
| M4817 | Ankylosing hyperostosis [Forestier], lumbosacral region | E | Accepted |
| M4818 | Ankylosing hyperostosis, sacral and sacrococcygeal region | E | Accepted |
| M4819 | Ankylosing hyperostosis [Forestier], multiple sites in spine | E | Accepted |
| M4820 | Kissing spine, site unspecified | None | Cannot group |
| M4821 | Kissing spine, occipito-atlanto-axial region | E | Accepted |
| M4822 | Kissing spine, cervical region | E | Accepted |
| M4823 | Kissing spine, cervicothoracic region | E | Accepted |
| M4824 | Kissing spine, thoracic region | E | Accepted |
| M4825 | Kissing spine, thoracolumbar region | E | Accepted |
| M4826 | Kissing spine, lumbar region | E | Accepted |
| M4827 | Kissing spine, lumbosacral region | E | Accepted |
| M4830 | Traumatic spondylopathy, site unspecified | None | Too unspecified |
| M4831 | Traumatic spondylopathy, occipito-atlanto-axial region | E | Accepted |
| M4832 | Traumatic spondylopathy, cervical region | E | Accepted |
| M4833 | Traumatic spondylopathy, cervicothoracic region | E | Accepted |
| M4834 | Traumatic spondylopathy, thoracic region | E | Accepted |
| M4835 | Traumatic spondylopathy, thoracolumbar region | E | Accepted |
| M4836 | Traumatic spondylopathy, lumbar region | E | Accepted |
| M4837 | Traumatic spondylopathy, lumbosacral region | E | Accepted |
| M4838 | Traumatic spondylopathy, sacral and sacrococcygeal region | E | Accepted |
| M4840XA | Fatigue fracture of vertebra, site unsp, init for fx | None | Cannot group |
| M4840XD | Fatigue fx vertebra, site unsp, subs for fx w routn heal | None | Cannot group |
| M4840XG | Fatigue fx vertebra, site unsp, subs for fx w delay heal | None | Cannot group |
| M4840XS | Fatigue fracture of vertebra, site unsp, sequela of fracture | None | Cannot group |
| M4841XA | Fatigue fracture of vertebra, occipt-atlan-ax region, init | E | Accepted |
| M4841XD | Fatigue fx vert, occipt-atlan-ax rgn, 7thD | E | Accepted |
| M4841XG | Fatigue fx vert, occipt-atlan-ax rgn, 7thG | E | Accepted |
| M4841XS | Fatigue fracture of vertebra, occipt-atlan-ax region, sqla | E | Accepted |
| M4842XA | Fatigue fracture of vertebra, cervical region, init for fx | E | Accepted |
| M4842XD | Fatigue fx vertebra, cerv region, subs for fx w routn heal | E | Accepted |
| M4842XG | Fatigue fx vertebra, cerv region, subs for fx w delay heal | E | Accepted |
| M4842XS | Fatigue fracture of vertebra, cervical region, sqla | E | Accepted |
| M4843XA | Fatigue fracture of vertebra, cervicothoracic region, init | E | Accepted |
| M4843XD | Fatigue fx vert, cervicothor rgn, subs for fx w routn heal | E | Accepted |
| M4843XG | Fatigue fx vert, cervicothor rgn, subs for fx w delay heal | E | Accepted |
| M4843XS | Fatigue fracture of vertebra, cervicothoracic region, sqla | E | Accepted |
| M4844XA | Fatigue fracture of vertebra, thoracic region, init for fx | E | Accepted |
| M4844XD | Fatigue fx vertebra, thor region, subs for fx w routn heal | E | Accepted |
| M4844XG | Fatigue fx vertebra, thor region, subs for fx w delay heal | E | Accepted |
| M4844XS | Fatigue fracture of vertebra, thoracic region, sqla | E | Accepted |
| M4845XA | Fatigue fracture of vertebra, thoracolumbar region, init | E | Accepted |
| M4845XD | Fatigue fx vertebra, thrclm region, subs for fx w routn heal | E | Accepted |
| M4845XG | Fatigue fx vertebra, thrclm region, subs for fx w delay heal | E | Accepted |
| M4845XS | Fatigue fracture of vertebra, thoracolumbar region, sqla | E | Accepted |
| M4846XA | Fatigue fracture of vertebra, lumbar region, init for fx | E | Accepted |
| M4846XD | Fatigue fx vertebra, lumbar region, subs for fx w routn heal | E | Accepted |
| M4846XG | Fatigue fx vertebra, lumbar region, subs for fx w delay heal | E | Accepted |
| M4846XS | Fatigue fracture of vertebra, lumbar region, sqla | E | Accepted |
| M4847XA | Fatigue fracture of vertebra, lumbosacral region, init | E | Accepted |
| M4847XD | Fatigue fx vert, lumbosacr region, subs for fx w routn heal | E | Accepted |
| M4847XG | Fatigue fx vert, lumbosacr region, subs for fx w delay heal | E | Accepted |
| M4847XS | Fatigue fracture of vertebra, lumbosacral region, sqla | E | Accepted |
| M4848XA | Fatigue fracture of vertebra, sacr/sacrocygl region, init | E | Accepted |
| M4848XD | Fatigue fx vert, sacr/sacrocygl rgn, 7thD | E | Accepted |
| M4848XG | Fatigue fx vert, sacr/sacrocygl rgn, 7thG | E | Accepted |
| M4848XS | Fatigue fracture of vertebra, sacr/sacrocygl region, sqla | E | Accepted |
| M4850XA | Collapsed vertebra, NEC, site unsp, init | None | Too unspecified |
| M4850XD | Collapsed vertebra, NEC, site unsp, subs for fx w routn heal | None | Cannot group |
| M4850XG | Collapsed vertebra, NEC, site unsp, subs for fx w delay heal | None | Cannot group |
| M4850XS | Collapsed vertebra, NEC, site unsp, sequela of fracture | None | Cannot group |
| M4851XA | Collapsed vertebra, NEC, occipito-atlanto-axial region, init | E | Accepted |
| M4851XD | Collapsed vert, NEC, occipt-atlan-ax rgn, 7thD | E | Accepted |
| M4851XG | Collapsed vert, NEC, occipt-atlan-ax rgn, 7thG | E | Accepted |
| M4851XS | Collapsed vertebra, NEC, occipt-atlan-ax region, sqla | E | Accepted |
| M4852XA | Collapsed vertebra, NEC, cervical region, init | E | Accepted |
| M4852XD | Collapsed vert, NEC, cerv region, subs for fx w routn heal | E | Accepted |
| M4852XG | Collapsed vert, NEC, cerv region, subs for fx w delay heal | E | Accepted |
| M4852XS | Collapsed vertebra, NEC, cervical region, sqla | E | Accepted |
| M4853XA | Collapsed vertebra, NEC, cervicothoracic region, init | E | Accepted |
| M4853XD | Collapsed vert, NEC, cervicothor rgn, 7thD | E | Accepted |
| M4853XG | Collapsed vert, NEC, cervicothor rgn, 7thG | E | Accepted |
| M4853XS | Collapsed vertebra, NEC, cervicothoracic region, sqla | E | Accepted |
| M4854XA | Collapsed vertebra, NEC, thoracic region, init | E | Accepted |
| M4854XD | Collapsed vert, NEC, thor region, subs for fx w routn heal | E | Accepted |
| M4854XG | Collapsed vert, NEC, thor region, subs for fx w delay heal | E | Accepted |
| M4854XS | Collapsed vertebra, NEC, thoracic region, sqla | E | Accepted |
| M4855XA | Collapsed vertebra, NEC, thoracolumbar region, init | E | Accepted |
| M4855XD | Collapsed vert, NEC, thrclm region, subs for fx w routn heal | E | Accepted |
| M4855XG | Collapsed vert, NEC, thrclm region, subs for fx w delay heal | E | Accepted |
| M4855XS | Collapsed vertebra, NEC, thoracolumbar region, sqla | E | Accepted |
| M4856XA | Collapsed vertebra, NEC, lumbar region, init | E | Accepted |
| M4856XD | Collapsed vert, NEC, lumbar region, subs for fx w routn heal | E | Accepted |
| M4856XG | Collapsed vert, NEC, lumbar region, subs for fx w delay heal | E | Accepted |
| M4856XS | Collapsed vertebra, NEC, lumbar region, sequela of fracture | E | Accepted |
| M4857XA | Collapsed vertebra, NEC, lumbosacral region, init | E | Accepted |
| M4857XD | Collapsed vert, NEC, lumbosacr rgn, subs for fx w routn heal | E | Accepted |
| M4857XG | Collapsed vert, NEC, lumbosacr rgn, subs for fx w delay heal | E | Accepted |
| M4857XS | Collapsed vertebra, NEC, lumbosacral region, sqla | E | Accepted |
| M4858XA | Collapsed vertebra, NEC, sacr/sacrocygl region, init | E | Accepted |
| M4858XD | Collapsed vert, NEC, sacr/sacrocygl rgn, 7thD | E | Accepted |
| M4858XG | Collapsed vert, NEC, sacr/sacrocygl rgn, 7thG | E | Accepted |
| M4858XS | Collapsed vertebra, NEC, sacr/sacrocygl region, sqla | E | Accepted |
| M488X1 | Oth spondylopathies, occipito-atlanto-axial region | E | Accepted |
| M488X2 | Other specified spondylopathies, cervical region | E | Accepted |
| M488X3 | Other specified spondylopathies, cervicothoracic region | E | Accepted |
| M488X4 | Other specified spondylopathies, thoracic region | E | Accepted |
| M488X5 | Other specified spondylopathies, thoracolumbar region | E | Accepted |
| M488X6 | Other specified spondylopathies, lumbar region | E | Accepted |
| M488X7 | Other specified spondylopathies, lumbosacral region | E | Accepted |
| M488X8 | Oth spondylopathies, sacral and sacrococcygeal region | E | Accepted |
| M488X9 | Other specified spondylopathies, site unspecified | None | Cannot group |
| M489 | Spondylopathy, unspecified | E | Accepted |
| M4980 | Spondylopathy in diseases classified elsewhere, site unsp | None | Cannot group |
| M4981 | Spond in diseases classd elswhr, occipt-atlan-ax region | None | Cannot group |
| M4982 | Spondylopathy in diseases classd elswhr, cervical region | None | Cannot group |
| M4983 | Spondylopathy in diseases classd elswhr, cervicothor region | None | Cannot group |
| M4984 | Spondylopathy in diseases classd elswhr, thoracic region | None | Cannot group |
| M4985 | Spond in diseases classd elswhr, thoracolumbar region | None | Cannot group |
| M4986 | Spondylopathy in diseases classd elswhr, lumbar region | None | Cannot group |
| M4987 | Spondylopathy in diseases classd elswhr, lumbosacral region | None | Cannot group |
| M4988 | Spond in diseases classd elswhr, sacr/sacrocygl region | None | Cannot group |
| M4989 | Spond in diseases classd elswhr, multiple sites in spine | 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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