MS-DRG 644 — ENDOCRINE DISORDERS WITH CC

DRGMedicalMDC 10

FY2026 payment factors

Relative weight: 1.0250
Geometric mean LOS: 3.40
Arithmetic mean LOS: 4.20
Post-acute transfer: Yes

This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.

Other DRGs in MDC 10

The with-MCC, with-CC and without-CC/MCC splits usually sit next to each other here. Those are what a documentation query is actually deciding between, and the weight gap between them is why the query is worth raising.

614ADRENAL AND PITUITARY PROCEDURES WITH CC/MCC2.1918
615ADRENAL AND PITUITARY PROCEDURES WITHOUT CC/MCC1.3993
616AMPUTATION OF LOWER LIMB FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITH MCC3.4874
617AMPUTATION OF LOWER LIMB FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITH CC1.8703
618AMPUTATION OF LOWER LIMB FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITHOUT CC/MCC1.4183
619O.R. PROCEDURES FOR OBESITY WITH MCC2.8874
620O.R. PROCEDURES FOR OBESITY WITH CC1.6003
621O.R. PROCEDURES FOR OBESITY WITHOUT CC/MCC1.5084
622SKIN GRAFTS AND WOUND DEBRIDEMENT FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITH MCC3.5592
623SKIN GRAFTS AND WOUND DEBRIDEMENT FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITH CC1.7939
624SKIN GRAFTS AND WOUND DEBRIDEMENT FOR ENDOCRINE, NUTRITIONAL AND METABOLIC DISORDERS WITHOUT CC/MCC1.2519
625THYROID, PARATHYROID AND THYROGLOSSAL PROCEDURES WITH MCC3.0201
626THYROID, PARATHYROID AND THYROGLOSSAL PROCEDURES WITH CC1.4994
627THYROID, PARATHYROID AND THYROGLOSSAL PROCEDURES WITHOUT CC/MCC1.3283
628OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH MCC3.7268
629OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH CC2.1788
630OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITHOUT CC/MCC1.4595
637DIABETES WITH MCC1.4367
638DIABETES WITH CC0.8962
639DIABETES WITHOUT CC/MCC0.6212
640MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITH MCC1.3356
641MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC0.7782
642INBORN AND OTHER DISORDERS OF METABOLISM1.4221
643ENDOCRINE DISORDERS WITH MCC1.6461
645ENDOCRINE DISORDERS WITHOUT CC/MCC0.7683

Working the claim behind this DRG

A DRG is assigned from the diagnoses and procedures already on the claim, so the questions that decide MS-DRG 644 are coding questions. Look the principal diagnosis up in the full ICD-10-CM tabular list with its Excludes1 and “code first” notes attached, or start from the condition instead of the code in the codes-by-condition index. For the secondary diagnoses that move a case between the with-MCC, with-CC and without-CC/MCC splits, paste the whole set into the free claim scrubber and see which pairs collide before the claim goes out — no account, no card.

The supplies, drugs and devices billed alongside an inpatient stay are HCPCS Level II, listed in full at HCPCS by section. If the claim comes back rejected, the denial code index explains what each CARC actually means and what to do about it, and the decision guides walk the sequencing calls that most often cause one — sepsis and diabetes above all.

Every one of those is free and needs no account. This page is the payment table: it says what MS-DRG 644 is worth. Which medical DRG a set of diagnoses lands in is the workspace’s DRG impact check, from the CMS CC/MCC lists; it does not group surgical cases.