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LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Checking

76398 Hogwarts Hospital Wing

493 pieces in 140 part and color combinations, plus 4 minifigures.

LEGO counts 510 pieces. This inventory comes from a separate parts catalog and lists 509, including the 16 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 2 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 30 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

Plate Round 1 x 1 with Solid Stud White ×1 Trans-Clear ×2 Trans-Clear is see-through: hold the piece up to a light.
Equipment Wand [Individual] Reddish Brown ×1 Dark Brown ×1 Reddish Brown is redder and lighter than Dark Brown.

Piece checklist

Bricks Sloped 56 pieces

Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Dark Tan Part 28192 Element 6335228 ×4
Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Red Part 22388 Element 6350414 1 spare in the box ×1
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Sand Green Part 54200 Element 4652205 1 spare in the box ×14
Brick Sloped 30° 1 x 2 x 2/3 Sand Green Part 85984 Element 6210479 ×14
Brick Sloped 45° 2 x 1 Double with Inside Stud Holder Sand Green Part 3044c Element 6376005 ×3
Brick Sloped 45° 2 x 1 with Bottom Pin Tan Part 3040b Element 4121972 or 4113989 ×8
Brick Sloped 65° 2 x 1 x 2 Tan Part 60481 Element 4626200 ×6
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Tan Part 3660 Element 4118866 ×3
Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×3

Windows and Doors 38 pieces

Window 1 x 2 x 2 Castle Tan Part 90195 Element 4642933 or 4622128 ×1
Window 1 x 2 x 2 Flat Front Tan Part 60592 Element 6387150 or 6378142 ×18
Window Pane Latticed 1 x 2 x 2 White Part 38320 Element 6477130 or 6344414 ×19

Bricks Special 32 pieces

Brick Special 1 x 2 Palisade [aka Log] Dark Tan Part 30136 Element 4520257 ×2
Brick Special 1 x 2 with Masonry Brick Profile Medium Nougat Part 98283 Element 4656783 ×6
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Tan Part 60475b Element 6360037 or 6136390 ×2
Brick Special 1 x 1 with Scroll with Open Stud Tan Part 20310 Element 6114992 ×12
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Tan Part 22885 Element 6214334 ×2
Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×4
Brick Special 1 x 2 Palisade [aka Log] White Part 30136 Element 6552148 or 6059185 ×4

Bricks Curved 29 pieces

Brick Curved 2 x 4 x 1 1/3 Medium Blue Part 6081 Element 6149564 or 4179832 ×6
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Pearl Gold Part 47457 Element 4286597 ×1
Brick Arch 1 x 3 x 3 [Gothic] Tan Part 13965 Element 6058093 ×12
Brick Arch 1 x 6 Raised Arch Tan Part 92950 Element 4618876 ×1
Brick Arch 1 x 8 x 2 Raised Tan Part 16577 Element 6313660 or 6079724 ×1
Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Tan Part 18653 Element 6212038 ×6
Brick Curved, 3 x 1 with 1/3 Inverted Cutout Tan Part 70681 Element 6328182 ×2

Bricks Round and Cones 25 pieces

Cone 1.17 x 1.17 x 2/3 (Fez) Pearl Gold Part 85975 Element 6173139 or 6006217 ×3
Cone 1 x 1 [Top Groove] Sand Green Part 59900 Element 6134280 or 4520959 ×13
Cone 2 x 2 x 3 Jagged Sand Green Part 28598 Element 6351403 ×2
Brick Round 2 x 2 with Axle Hole Tan Part 3941 Element 4125220 or 614305 ×3
Cone 1 x 1 [Top Groove] Trans-Bright Green Part 59900 Element 6514024 or 6337628 ×1
Cone 1 x 1 [Top Groove] Trans-Dark Pink Part 59900 Element 6514026 or 6337637 ×1
Brick Round 1 x 1 Open Stud Trans-Yellow Part 3062b Element 6514236 or 6238674 ×1
Brick Round 1 x 1 with 'Skele-Gro' Print White Part 3062bpr0031 Element 6381995 ×1

Tiles 17 pieces

Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
Tile 1 x 6 with Groove Dark Tan Part 6636 Element 4507047 or 4251129 ×6
Tile 2 x 4 with Groove Dark Tan Part 87079 Element 6164288 ×2
Tile 2 x 2 with Groove Medium Blue Part 3068b Element 4528357 or 4188291 ×3
Tile 2 x 3 Medium Blue Part 26603 Element 6211973 ×2
Tile 1 x 2 with Chocolate Bar Print Reddish Brown Part 3069bpr0168 Element 6139435 ×1
Tile 1 x 2 with Groove Tan Part 3069b Element 4114026 ×2

Hinges, Arms and Turntables 16 pieces

Hinge Brick 1 x 4 [Lower] Medium Nougat Part 3831 Element 6102967 ×4
Hinge Brick 1 x 4 [Upper] Medium Nougat Part 3830 Element 6344798 or 6162886 ×4
Hinge Brick 1 x 2 Base Reddish Brown Part 3937 Element 6186045 or 4541234 ×4
Hinge Brick 2 x 2 Top Plate Thin Reddish Brown Part 6134 Element 6167644 or 4541230 ×4

Technic Bricks 11 pieces

Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×8
Technic Brick 1 x 2 [1 Pin Hole] Tan Part 3700 Element 4205107 or 370005 ×3

Minifig Accessories 10 pieces

Equipment Wand [Individual] Dark Brown Part 36752a 1 spare in the box Also in Reddish Brown ×1
Equipment Wand [Individual] Dark Tan Part 36752a ×2
Equipment Lantern Pearl Gold Part 37776 Element 6283475 ×1
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Pearl Gold Part 64644 Element 4538126 ×2
Equipment Wand [Individual] Reddish Brown Part 36752a 1 spare in the box Also in Dark Brown ×1
Equipment Candlestick White Part 37762 Element 6234807 ×2
Equipment Medical Bandage White Part 30924 Element 6359937 or 6192049 ×1

Bars, Ladders and Fences 8 pieces

Bar 3L Reddish Brown Part 87994 Element 6428805 or 6075208 1 spare in the box ×1
Bar 1 x 4 x 2 with Studs White Part 4083 Element 408301 ×6
Lattice 3 x 6 Module with Studs White Part 23444 Element 6254291 or 6208573 ×1

Animal / Creature Body Parts 6 pieces

Creature Body Part, Horn (Unicorn) Sand Green Part 89522 Element 6223215 or 6070905 1 spare in the box ×6

Tiles Round and Curved 6 pieces

Tile Round 2 x 2 with Roman Numerals Clock Print Reddish Brown Part 14769pr1054 Element 6157942 ×1
Tile Round 1 x 1 Quarter Tan Part 25269 Element 6145570 1 spare in the box ×4
Tile Round 1 x 1 with Gold Time Turner Hourglass Print Trans-Clear Part 98138pr0192 Element 6381996 1 spare in the box ×1

Technic Gears 5 pieces

Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×1
Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×1
Technic Gear 40 Tooth Light Bluish Gray Part 3649 Element 6195314 or 4285634 ×1
Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×2

Panels 4 pieces

Panel 1 x 6 x 7 with 2 Columns and Arch Tan Part 40066 Element 6273864 ×4

Plants & Trees 4 pieces

Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Pink Part 24866 Element 6212501 1 spare in the box ×3
Plant, Flower Stem with Bottom Bar Green Part 24855 Element 6269971 or 6135278 1 spare in the box ×1

Tiles Special 4 pieces

Tile Special Round 1 x 1 with Hollow Bar Black Part 20482 Element 6186675 or 6167933 1 spare in the box ×1
Tile Special Round 2 x 2 with Hole Dark Tan Part 15535 Element 6132790 ×2
Tile Special Round 1 x 1 with Hollow Bar Pearl Gold Part 20482 Element 6186672 or 6126113 1 spare in the box ×1

Rock 3 pieces

Rock - Heart Jewel with Shaft Trans-Dark Pink Part 15745 Element 6240042 or 6058337 ×1
Rock 1 x 1 Jewel / Gem 24 Facet Trans-Light Blue Part 30153 Element 6513972 or 6247792 1 spare in the box ×1
Rock 1 x 1 Jewel / Gem 24 Facet Trans-Yellow Part 30153 Element 6513974 or 6247795 1 spare in the box ×1

Technic Axles 3 pieces

Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1
Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×1

Technic Pins 3 pieces

Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Containers 2 pieces

Treasure Chest Bottom with Rear Slots, No Groove Reddish Brown Part 4738c Element 4533101 ×1
Treasure Chest Lid, Flat with 2 Studs Reddish Brown Part 80835 Element 6377651 ×1

Energy Effects 2 pieces

Wave / Flame Small with Pin Trans-Orange Part 37775 Element 6514274 or 6357747 1 spare in the box ×2

Animals / Creatures 1 piece

Animal, Bird, Owl Small with Open Wings, Angular Features with Orange Eyes and Beak and Dark Bluish Gray and White Rippled Chest Feathers Print Sand Blue Part 67632pr0002 Element 6381997 ×1

Flags, Banners and Signs 1 piece

Road Sign Clip-on 2 x 2 Square [Thick Open O Clip] White Part 15210 Element 6323185 or 6046383 ×1

Minifig Heads 1 piece

Minifig Head Baby / Toddler with Skeleton Face Print White Part 33464pr0008 Element 6381994 ×1

Minifig Upper Body 1 piece

Arm Mechanical Straight (Droid) [2 Clips at 90°] Black Part 59230 Element 4505757 1 spare in the box ×1

Stickers 1 piece

Sticker Sheet for Set 76398-1 [No Color/Any Color] Part 91662 Element 6380099 ×1

Technic Bushes 1 piece

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×1

Technic Connectors 1 piece

Technic Pin Connector Round 1L [Beam] Tan Part 18654 Element 6167923 1 spare in the box ×1

Transportation - Land 1 piece

Seat / Chair 2 x 2 with Center Sprue Mark Reddish Brown Part 4079b ×1

Minifigures 4 figures

Madam Pomfrey Minifigure, checked as a whole figure ×1
Hermione Granger, Bright Pink Hoodie over Dark Pink Shirt, Medium Legs, Smirk / Angry Minifigure, checked as a whole figure ×1
Harry Potter, Dark Blue Jacket Dirty, Medium Legs, Closed Mouth Minifigure, checked as a whole figure ×1
Ron Weasley, Red Sweater Dirty, Odd Medium Legs Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.